Hello,
I’ve been using the latest github install of cesium here: Releases · CesiumGS/cesium-omniverse · GitHub
And following the guide mentioned here: Cesium for Omniverse Quickstart – Cesium
I followed the steps in the guide and the extensions successfully showed up in the Extension Manager. However, I couldn’t get Cesium to run, due to dependency linkage errors. I have attached a screenshot with my ldd results of the libcesium plugin. In the container I’ve been using to run Omniverse, I can’t find a lot of these .so files. Does anyone have any information as to where to get these .so files so I can run cesium?
Hi @yoshterra
We don’t bundle the shared libraries with the extension because they are included in kit and are dynamically linked automatically. That’s why you see not found when running ldd.
Do you have the error log from within IsaacSim?
Attached are the error logs I get from Cesium startup without any manipulation. My LD_LIBRARY_PATH is “/usr/local/lib64:/usr/local/cuda-13.0.2/lib64:/usr/lib64”, so this cesium so file isn’t found without adding the path to it. I’m using the image nvcr.io/nvidia/isaac-sim:6.0.0-dev2 . Thanks for the help!
Part 1:
Loading user config located at: '/isaac-sim/.local/share/ov/data/Kit/Isaac-Sim Full/6.0/user.config.json'
[Info] [carb] Logging to file: /isaac-sim/.nvidia-omniverse/logs/Kit/Isaac-Sim Full/6.0/kit_20260520_150225.log
2026-05-20T15:02:25Z [3ms] [Warning] [omni.ext.plugin] [ext: CesiumGS-cesium-omniverse-linux-x86_64-v0.28.0] Extensions config 'extension.toml' doesn't exist '/isaac-sim/.local/share/ov/data/Kit/Isaac-Sim Full/6.0/exts/3/CesiumGS-cesium-omniverse-linux-x86_64-v0.28.0' or '/isaac-sim/.local/share/ov/data/Kit/Isaac-Sim Full/6.0/exts/3/CesiumGS-cesium-omniverse-linux-x86_64-v0.28.0/config'
[0.974s] [ext: omni.kit.async_engine-0.0.3] startup
[2.305s] [ext: omni.assets.plugins-0.0.0] startup
[2.308s] [ext: omni.blobkey-1.1.2] startup
[2.308s] [ext: omni.client.lib-1.1.1] startup
[2.375s] [ext: omni.client-1.3.0] startup
[2.383s] [ext: omni.protobuf.lib-1.0.0] startup
[2.385s] [ext: omni.grpc.lib-1.0.0] startup
[2.394s] [ext: omni.metrics.core-0.0.3] startup
[2.395s] [ext: omni.datastore-0.0.0] startup
WARNING: All log messages before absl::InitializeLog() is called are written to STDERR
E0000 00:00:1779289348.033718 52 descriptor_database.cc:633] File already exists in database: grpc/health/v1/health.proto
W0000 00:00:1779289348.033768 52 message.cc:301] Protobuf GeneratedMessageFactory: File is already registered: grpc/health/v1/health.proto
[2.396s] [ext: omni.gpu_foundation.shadercache.vulkan-1.0.0] startup
[2.426s] [ext: omni.hsscclient-1.1.4] startup
[2.428s] [ext: omni.stats-1.0.1] startup
[2.432s] [ext: omni.ujitso.default-1.0.0] startup
[2.440s] [ext: omni.gpu_foundation-0.0.0] startup
[2.458s] [ext: carb.windowing.plugins-1.0.1] startup
[2.502s] [ext: omni.kit.renderer.init-1.0.1] startup
|---------------------------------------------------------------------------------------------|
| Driver Version: 580.126.18 | Graphics API: Vulkan
|=============================================================================================|
| GPU | Name | Active | LDA | GPU Memory | Vendor-ID | LUID |
| | | | | | Device-ID | UUID |
| | | | | | Bus-ID | |
|---------------------------------------------------------------------------------------------|
| 0 | NVIDIA RTX 3500 Ada Generation.. | Yes: 0 | | 12282 MB | 10de | 0 |
| | | | | | 27bb | 789eb063.. |
| | | | | | 1 | |
|=============================================================================================|
| OS: 24.04.3 LTS (Noble Numbat) ubuntu, Version: 24.04.3, Kernel: 5.14.0-611.54.1.el9_7.x86_64
| XServer Vendor: The X.Org Foundation, XServer Version: 12011000 (1.20.11.0)
| Processor: 13th Gen Intel(R) Core(TM) i9-13950HX
| Cores: 24 | Logical Cores: 48
|---------------------------------------------------------------------------------------------|
| Total Memory (MB): 63711 | Free Memory: 46560
| Total Page/Swap (MB): 32051 | Free Page/Swap: 0
|---------------------------------------------------------------------------------------------|
2026-05-20T15:02:29Z [3,311ms] [Warning] [gpu.foundation.plugin] CPU performance profile is set to powersave. This profile sets the CPU to the lowest frequency reducing performance.
2026-05-20T15:02:29Z [3,322ms] [Warning] [gpu.foundation.plugin] IOMMU is enabled.
[3.607s] [ext: omni.kit.pipapi-0.0.0] startup
[3.613s] [ext: omni.kit.pip_archive-0.0.0] startup
[3.615s] [ext: isaacsim.pip.newton-0.4.0] startup
[3.621s] [ext: omni.pip.compute-1.9.0] startup
[3.622s] [ext: omni.isaac.core_archive-5.3.0] startup
[3.623s] [ext: omni.kit.telemetry-0.5.2] startup
[3.667s] [ext: omni.kit.loop-isaac-1.5.0] startup
[3.670s] [ext: omni.kit.test-2.0.6] startup
[4.401s] [ext: omni.materialx.libs-1.0.9] startup
[4.419s] [ext: omni.gpucompute.plugins-0.0.0] startup
[4.420s] [ext: omni.usd.config-1.0.6] startup
[4.429s] [ext: omni.usd.libs-1.0.1] startup
[4.601s] [ext: omni.iray.libs-0.0.1] startup
[4.610s] [ext: omni.mdl-57.0.1] startup
[5.391s] [ext: omni.mdl.neuraylib-0.2.19] startup
[5.406s] [ext: omni.kit.usd.mdl-1.1.9] startup
[5.648s] [ext: omni.services.pip_archive-0.18.6] startup
[5.650s] [ext: omni.appwindow-1.2.1] startup
[5.658s] [ext: omni.kit.renderer.core-1.2.1] startup
[5.808s] [ext: omni.kit.renderer.capture-2.0.1] startup
[5.818s] [ext: omni.kit.renderer.imgui-2.0.6] startup
[6.013s] [ext: omni.ui-3.0.6] startup
[6.071s] [ext: omni.kit.mainwindow-1.0.3] startup
[6.077s] [ext: carb.audio-0.1.0] startup
[6.084s] [ext: omni.uiaudio-1.0.0] startup
[6.087s] [ext: omni.kit.uiapp-0.0.0] startup
[6.087s] [ext: omni.usd.schema.metrics.assembler-110.0.0] startup
[6.096s] [ext: cesium.usd.plugins-0.9.0] startup
2026-05-20T15:02:31Z [6,032ms] [Error] [omni.ext.plugin] Could not load the dynamic library from /isaac-sim/.local/share/ov/data/documents/Kit/shared/exts/cesium.usd.plugins/bin/libCesiumUsdSchemas.so. Error: libtbb.so.2: cannot open shared object file: No such file or directory (note that this may be caused by a dependent library)
2026-05-20T15:02:31Z [6,043ms] [Error] [omni.ext._impl._internal] Failed to import python module cesium.usd.plugins from /isaac-sim/.local/share/ov/data/documents/Kit/shared/exts/cesium.usd.plugins. Error:
Error in 'pxrInternal_v0_25_11__pxrReserved__::PlugPlugin::_Load' at line 243 in file /builds/omniverse/usd-ci/USD/pxr/base/plug/plugin.cpp : 'Failed to load plugin 'CesiumUsdSchemas': libtbb.so.2: cannot open shared object file: No such file or directory in '/isaac-sim/.local/share/ov/data/documents/Kit/shared/exts/cesium.usd.plugins/bin/libCesiumUsdSchemas.so''. Traceback:
Traceback (most recent call last):
File "/isaac-sim/kit/kernel/py/omni/ext/_impl/_internal.py", line 212, in _custom_importer
return _import_public(ext_module.path, ext_module.name, reload_enabled)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/isaac-sim/kit/kernel/py/carb/profiler/__init__.py", line 107, in wrapper
r = f(*args, **kwds)
^^^^^^^^^^^^^^^^
File "/isaac-sim/kit/kernel/py/omni/ext/_impl/_internal.py", line 111, in _import_public
module = import_module(module_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/isaac-sim/kit/kernel/py/carb/profiler/__init__.py", line 107, in wrapper
r = f(*args, **kwds)
^^^^^^^^^^^^^^^^
File "/isaac-sim/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 107, in import_module
return importlib.import_module(name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/isaac-sim/kit/python/lib/python3.12/importlib/__init__.py", line 90, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
File "<frozen importlib._bootstrap>", line 1310, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
File "<frozen importlib._bootstrap>", line 1331, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 935, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 999, in exec_module
File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
File "/isaac-sim/.local/share/ov/data/documents/Kit/shared/exts/cesium.usd.plugins/cesium/usd/__init__.py", line 1, in <module>
from .plugins import * # noqa: F401 F403
^^^^^^^^^^^^^^^^^^^^^^
File "/isaac-sim/.local/share/ov/data/documents/Kit/shared/exts/cesium.usd.plugins/cesium/usd/plugins/__init__.py", line 10, in <module>
plugin.Load()
pxr.Tf.ErrorException:
Error in 'pxrInternal_v0_25_11__pxrReserved__::PlugPlugin::_Load' at line 243 in file /builds/omniverse/usd-ci/USD/pxr/base/plug/plugin.cpp : 'Failed to load plugin 'CesiumUsdSchemas': libtbb.so.2: cannot open shared object file: No such file or directory in '/isaac-sim/.local/share/ov/data/documents/Kit/shared/exts/cesium.usd.plugins/bin/libCesiumUsdSchemas.so''
2026-05-20T15:02:31Z [6,043ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'cesium.usd.plugins' in '/isaac-sim/.local/share/ov/data/documents/Kit/shared/exts/cesium.usd.plugins' failed to load.
At:
/isaac-sim/kit/kernel/py/omni/ext/_impl/_internal.py(240): startup
/isaac-sim/kit/kernel/py/omni/ext/_impl/_internal.py(366): startup_extension
PythonExtension.cpp::startup()(2): <module>
2026-05-20T15:02:31Z [6,043ms] [Error] [omni.ext.plugin] [ext: cesium.usd.plugins-0.9.0] Failed to startup python extension.
[6.183s] [ext: omni.usd.schema.audio-0.0.1] startup
[6.210s] [ext: omni.usd_resolver-1.0.0] startup
[6.218s] [ext: omni.usd.core-1.8.0] startup
[6.223s] [ext: omni.metropolis.schema-0.0.1] startup
[6.225s] [ext: isaacsim.anim.robot.schema-0.1.0] startup
[6.230s] [ext: omni.usd.schema.anim-0.0.1] startup
[6.276s] [ext: omni.usd.schema.geospatial-0.0.1] startup
[6.284s] [ext: omni.usd.schema.omnigraph-1.0.1] startup
[6.299s] [ext: omni.usd.schema.semantics-0.0.0] startup
[6.306s] [ext: omni.activity.core-1.0.3] startup
[6.310s] [ext: omni.cubric-0.1.0] startup
[6.310s] [ext: omni.graph.exec-0.9.6] startup
[6.311s] [ext: omni.hydra.scene_delegate-0.3.5] startup
[6.320s] [ext: usdrt.scenegraph-7.6.2] startup
[6.403s] [ext: omni.hydra.usdrt_delegate-7.5.2] startup
[6.418s] [ext: omni.inspect-1.0.2] startup
[6.425s] [ext: omni.kit.actions.core-1.0.0] startup
[6.434s] [ext: omni.kit.audiodeviceenum-1.0.2] startup
[6.440s] [ext: omni.kit.commands-1.5.0] startup
[6.471s] [ext: omni.kit.exec.core-0.13.5] startup
[6.477s] [ext: omni.kit.usd_undo-0.1.8] startup
[6.482s] [ext: omni.kit.window.popup_dialog-2.0.25] startup
[6.512s] [ext: omni.kit.widget.nucleus_connector-2.3.0] startup
[6.554s] [ext: omni.timeline-1.1.0] startup
[6.563s] [ext: omni.usd-1.13.61] startup
2026-05-20T15:02:32Z [6,650ms] [Warning] [carb] Acquiring non optional plugin interface which is not listed as dependency: [carb::datasource::IDataSource v1.1] (plugin: carb.datasource-omniclient.plugin), by client: omni.usd. Add it to CARB_PLUGIN_IMPL_DEPS() macro of a client.
[6.846s] [ext: omni.graph.core-3.1.0] startup
[6.852s] [ext: omni.kit.notification_manager-1.0.10] startup
[6.866s] [ext: isaacsim.core.deprecation_manager-0.3.3] startup
[6.875s] [ext: isaacsim.replicator.agent.schema-0.1.0] startup
[6.882s] [ext: isaacsim.robot.schema-5.1.0] startup
[6.913s] [ext: isaacsim.robot_motion.schema-0.2.0] startup
[6.920s] [ext: omni.anim.behavior.schema-110.0.1] startup
[6.931s] [ext: omni.anim.graph.schema-110.0.0] startup
[6.946s] [ext: omni.anim.navigation.schema-110.0.0] startup
[6.955s] [ext: omni.behavior.tree.schema-110.0.1] startup
[6.959s] [ext: omni.isaac.ml_archive-3.2.0] startup
[6.961s] [ext: omni.kit.asset_converter-5.1.1] startup
[7.004s] [ext: omni.pip.cloud-1.5.1] startup
[7.044s] [ext: omni.usd.schema.flow-110.0.0] startup
[7.046s] [ext: omni.usd.schema.mujoco-1.1.0] startup
[7.048s] [ext: omni.usd.schema.newton-1.1.0] startup
[7.052s] [ext: omni.usd.schema.omni_lens_distortion-1.0.0] startup
[7.054s] [ext: omni.usd.schema.omni_projectors-1.0.0] startup
[7.056s] [ext: omni.usd.schema.omni_sensors-0.0.0] startup
[7.074s] [ext: omni.usd.schema.omniscripting-1.0.1] startup
[7.087s] [ext: omni.usd.schema.physical_lighting-0.1.0] startup
[7.097s] [ext: omni.usd.schema.physx-110.0.7] startup
[7.172s] [ext: omni.usd.schema.render_settings.rtx-1.0.1] startup
[7.177s] [ext: omni.usd.schema.scene.visualization-2.0.2] startup
[7.182s] [ext: omni.usd.schema.usd_particle_field-1.0.0] startup
[7.184s] [ext: omni.hydra.engine.stats-1.0.4] startup
[7.190s] [ext: omni.hydra.rtx.shadercache.vulkan-1.0.0] startup
[7.193s] [ext: omni.index.libs-387500.3473.0] startup
[7.194s] [ext: omni.index-1.0.1] startup
[7.195s] [ext: omni.ujitso.client-0.0.0] startup
[7.195s] [ext: omni.usd.schema.playback-1.0.0] startup
[7.203s] [ext: omni.volume-0.5.2] startup
[7.212s] [ext: omni.hydra.rtx-1.0.2] startup
2026-05-20T15:02:32Z [7,178ms] [Warning] [omni.log] Source: omni.hydra was already registered.
[7.287s] [ext: omni.kit.clipboard-1.1.1] startup
[7.291s] [ext: omni.kit.collaboration.telemetry-1.1.0] startup
[7.293s] [ext: omni.kit.collaboration.channel_manager-1.1.0] startup
[7.315s] [ext: omni.kit.menu.core-1.2.0] startup
[7.325s] [ext: omni.kit.usd.layers-2.5.2] startup
[7.405s] [ext: omni.kit.widget.context_menu-1.3.0] startup
[7.418s] [ext: omni.kit.context_menu-1.8.6] startup
[7.443s] [ext: omni.kit.helper.file_utils-0.1.10] startup
[7.455s] [ext: omni.kit.hotkeys.core-1.3.12] startup
[7.489s] [ext: omni.kit.hydra_texture-1.6.0] startup
[7.501s] [ext: omni.kit.menu.utils-2.2.3] startup
[7.560s] [ext: omni.kit.widget.nucleus_info-2.0.2] startup
[7.565s] [ext: omni.kit.search_core-1.0.8] startup
[7.572s] [ext: omni.kit.widget.path_field-2.0.13] startup
[7.584s] [ext: omni.kit.widget.browser_bar-2.0.10] startup
[7.593s] [ext: omni.kit.widget.filebrowser-2.13.1] startup
[7.667s] [ext: omni.kit.widget.options_menu-1.1.6] startup
[7.695s] [ext: omni.kit.widget.options_button-1.0.3] startup
[7.700s] [ext: omni.kit.widget.search_delegate-1.0.9] startup
[7.713s] [ext: omni.kit.widget.versioning-1.4.11] startup
[7.741s] [ext: omni.ui.scene-2.0.1] startup
[7.758s] [ext: omni.kit.window.filepicker-2.15.2] startup
[7.989s] [ext: omni.kit.window.file_importer-1.1.20] startup
[8.001s] [ext: omni.kit.material.library-3.1.0] startup
[8.076s] [ext: omni.kit.raycast.query-1.2.0] startup
[8.087s] [ext: omni.kit.viewport.legacy_gizmos-1.0.24] startup
[8.093s] [ext: omni.kit.viewport.registry-104.0.6] startup
[8.096s] [ext: omni.kit.viewport.scene_camera_model-1.0.7] startup
[8.106s] [ext: omni.kit.widget.viewport-109.1.1] startup
[8.157s] [ext: omni.kit.window.drop_support-1.0.8] startup
[8.160s] [ext: omni.kit.viewport.window-109.0.1] startup
[8.265s] [ext: omni.kit.viewport.utility-2.0.1] startup
[8.273s] [ext: omni.kit.viewport.actions-107.0.2] startup
[8.292s] [ext: omni.videoencoding-0.1.2] startup
[8.299s] [ext: omni.kit.capture.viewport-1.8.4] startup
[8.347s] [ext: omni.kit.collaboration.presence_layer-1.2.1] startup
[8.371s] [ext: omni.kit.property.adapter.core-1.1.1] startup
[8.383s] [ext: omni.kit.property.adapter.usd-1.0.5] startup
[8.394s] [ext: omni.kit.stage_template.core-1.1.22] startup
[8.403s] [ext: omni.kit.widget.filter-1.1.5] startup
[8.412s] [ext: omni.kit.widget.highlight_label-1.0.3] startup
[8.421s] [ext: omni.kit.widget.prompt-1.0.7] startup
[8.435s] [ext: omni.kit.widget.live_session_management.ui-1.0.4] startup
[8.480s] [ext: omni.kit.widget.searchable_combobox-1.0.7] startup
[8.492s] [ext: omni.kit.widget.settings-1.2.6] startup
[8.522s] [ext: omni.kit.window.preferences-1.8.3] startup
[8.608s] [ext: omni.kit.widget.live_session_management-1.2.28] startup
[8.635s] [ext: omni.kit.widget.searchfield-1.1.8] startup
[8.649s] [ext: omni.kit.window.file_exporter-1.0.35] startup
[8.657s] [ext: omni.kit.widget.stage-4.1.0] startup
[8.774s] [ext: omni.kit.window.content_browser_registry-0.0.6] startup
[8.779s] [ext: omni.kit.window.file-2.0.9] startup
[8.810s] [ext: omni.kit.window.content_browser-3.1.7] startup
[8.862s] [ext: omni.kit.window.property-1.15.0] startup
[9.830s] [ext: omni.kit.property.usd-4.8.1] startup
Part 2:
[10.005s] [ext: cesium.omniverse-0.28.0] startup
2026-05-20T15:02:35Z [9,942ms] [Error] [carb] [Plugin: libcesium.omniverse.plugin.so] Could not load the dynamic library from /isaac-sim/.local/share/ov/data/documents/Kit/shared/exts/cesium.omniverse/bin/libcesium.omniverse.plugin.so. Error: libCesiumUsdSchemas.so: cannot open shared object file: No such file or directory (Additional information may be available by running the process with the LD_DEBUG environment variable set)
2026-05-20T15:02:35Z [9,942ms] [Warning] [carb] Potential plugin preload failed: /isaac-sim/.local/share/ov/data/documents/Kit/shared/exts/cesium.omniverse/bin/libcesium.omniverse.plugin.so
2026-05-20T15:02:35Z [9,942ms] [Error] [omni.ext.plugin] [ext: cesium.omniverse-0.28.0] failed to load native plugin: /isaac-sim/.local/share/ov/data/documents/Kit/shared/exts/cesium.omniverse/bin/libcesium.omniverse.plugin.so
2026-05-20T15:02:35Z [9,945ms] [Error] [omni.ext._impl.custom_importer] Failed to import python module cesium.omniverse. Error: libcesium.omniverse.plugin.so: cannot open shared object file: No such file or directory. Traceback:
Traceback (most recent call last):
File "/isaac-sim/kit/kernel/py/omni/ext/_impl/custom_importer.py", line 107, in import_module
return importlib.import_module(name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/isaac-sim/kit/python/lib/python3.12/importlib/__init__.py", line 90, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
File "<frozen importlib._bootstrap>", line 1331, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 935, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 999, in exec_module
File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
File "/isaac-sim/.local/share/ov/data/documents/Kit/shared/exts/cesium.omniverse/cesium/omniverse/__init__.py", line 1, in <module>
from .extension import * # noqa: F401 F403 F405
^^^^^^^^^^^^^^^^^^^^^^^^
File "/isaac-sim/.local/share/ov/data/documents/Kit/shared/exts/cesium.omniverse/cesium/omniverse/extension.py", line 1, in <module>
from .bindings import acquire_cesium_omniverse_interface, release_cesium_omniverse_interface, Viewport
File "/isaac-sim/.local/share/ov/data/documents/Kit/shared/exts/cesium.omniverse/cesium/omniverse/bindings/__init__.py", line 1, in <module>
from .CesiumOmniversePythonBindings import * # noqa: F401 F403
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ImportError: libcesium.omniverse.plugin.so: cannot open shared object file: No such file or directory
2026-05-20T15:02:35Z [9,945ms] [Error] [carb.scripting-python.plugin] Exception: Extension python module: 'cesium.omniverse' in '/isaac-sim/.local/share/ov/data/documents/Kit/shared/exts/cesium.omniverse' failed to load.
At:
/isaac-sim/kit/kernel/py/omni/ext/_impl/_internal.py(240): startup
/isaac-sim/kit/kernel/py/omni/ext/_impl/_internal.py(366): startup_extension
PythonExtension.cpp::startup()(2): <module>
2026-05-20T15:02:35Z [9,945ms] [Error] [omni.ext.plugin] [ext: cesium.omniverse-0.28.0] Failed to startup python extension.
[10.158s] [ext: isaacsim.core.version-2.0.6] startup
[10.177s] [ext: isaacsim.app.about-2.2.0] startup
[10.201s] [ext: omni.graph.tools-1.81.0] startup
[10.468s] [ext: omni.graph-1.142.5] startup
[10.710s] [ext: isaacsim.util.debug_draw-3.2.1] startup
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[10.840s] [ext: isaacsim.asset.gen.omap-2.2.1] startup
[10.870s] [ext: omni.kit.primitive.mesh-1.1.0] startup
[10.916s] [ext: omni.kit.stage_templates-2.0.2] startup
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[11.483s] [ext: isaacsim.gui.components-1.7.2] startup
[11.551s] [ext: isaacsim.asset.gen.omap.ui-2.5.0] startup
[11.586s] [ext: omni.physics.tensors-110.0.7] startup
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[13.264s] [ext: omni.mesh_tools.libs-110.0.1] startup
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[13.610s] [ext: omni.kit.tool.asset_importer-5.1.3] startup
[13.679s] [ext: isaacsim.asset.importer.mjcf.ui-1.1.0] startup
[13.796s] [ext: isaacsim.asset.importer.urdf-3.2.1] startup
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[13.867s] [ext: isaacsim.asset.transformer.ui-1.0.1] startup
[13.913s] [ext: omni.asset_validator.core-1.11.2] startup
[14.315s] [ext: isaacsim.asset.validation-1.2.1] startup
[14.336s] [ext: isaacsim.storage.native-1.8.0] startup
[14.357s] [ext: omni.debugdraw-0.1.4] startup
[14.367s] [ext: omni.kit.manipulator.selector-1.1.4] startup
[14.377s] [ext: omni.kit.manipulator.transform-107.0.0] startup
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[14.627s] [ext: omni.kit.window.cursor-1.1.5] startup
[14.632s] [ext: omni.kit.viewport.menubar.core-107.2.2] startup
[14.743s] [ext: omni.kit.viewport.menubar.display-107.1.3] startup
[14.756s] [ext: omni.kit.widget.layers-1.9.0] startup
[14.927s] [ext: omni.physx.commands-110.0.7] startup
[14.982s] [ext: omni.usdphysics.ui-110.0.7] startup
[15.111s] [ext: omni.physx.ui-110.0.7] startup
[15.267s] [ext: omni.usd.metrics.assembler.physics-110.0.7] startup
[15.296s] [ext: isaacsim.core.utils-4.0.4] startup
[15.316s] [ext: isaacsim.core.prims-0.8.8] startup
[20.345s] [ext: isaacsim.core.api-5.0.1] startup
[20.717s] [ext: isaacsim.core.cloner-1.6.4] startup
[20.729s] [ext: isaacsim.core.experimental.materials-0.5.1] startup
[20.769s] [ext: isaacsim.core.rendering_manager-0.2.3] startup
[20.788s] [ext: omni.graph.image.core-0.6.1] startup
[20.791s] [ext: omni.graph.image.nodes-1.3.1] startup
[20.794s] [ext: omni.graph.nodes_core-2.10.2] startup
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[20.829s] [ext: omni.graph.scriptnode-2.10.2] startup
[20.870s] [ext: omni.kit.widget.graph-2.1.0] startup
[20.976s] [ext: omni.kit.graph.delegate.default-1.2.5] startup
[20.980s] [ext: omni.kit.graph.editor.core-1.5.4] startup
[21.017s] [ext: omni.kit.graph.usd.commands-1.3.2] startup
[21.024s] [ext: omni.kit.widget.imageview-1.0.5] startup
[21.028s] [ext: omni.kit.window.quicksearch-2.4.4] startup
[21.058s] [ext: omni.kit.property.material-1.13.0] startup
2026-05-20T15:02:46Z [21,095ms] [Warning] [omni.usd] Encountered USD Warnings but USD Diagnostics are currently muted. To view USD Warnings, please set the '/persistent/app/usd/muteUsdDiagnostics' setting to false in Preferences page.
[21.187s] [ext: omni.kit.widget.material_preview-1.1.2] startup
[21.214s] [ext: omni.kit.window.material_graph-1.9.6] startup
[21.325s] [ext: omni.syntheticdata-0.6.15] startup
[21.498s] [ext: omni.replicator.nv-1.1.0] startup
OmniReplicatorNvExtension starting up (ext_id: omni.replicator.nv-1.1.0).
[21.523s] [ext: omni.replicator.core-1.13.4] startup
2026-05-20T15:02:47Z [21,627ms] [Warning] [pxr.Semantics] pxr.Semantics is deprecated - please use Semantics instead
Warp DeprecationWarning: The symbol `warp.context.Kernel` will soon be removed from the public API. Use `warp.Kernel` instead.
Warp 1.12.0 initialized:
CUDA Toolkit 12.9, Driver 13.0
Devices:
"cpu" : "x86_64"
"cuda:0" : "NVIDIA RTX 3500 Ada Generation Laptop GPU" (12 GiB, sm_89, mempool enabled)
Kernel cache:
/isaac-sim/.cache/warp/1.12.0
2026-05-20T15:02:47Z [22,073ms] [Warning] [omni.replicator.core.scripts.extension] No material configuration file, adding configuration to material settings directly.
[23.211s] [ext: isaacsim.core.nodes-5.4.0] startup
[23.407s] [ext: isaacsim.core.throttling-2.2.5] startup
[23.413s] [ext: isaacsim.examples.base-1.3.0] startup
[23.424s] [ext: omni.kit.widget.zoombar-1.0.7] startup
[23.432s] [ext: omni.kit.browser.core-2.3.17] startup
[23.489s] [ext: omni.kit.browser.folder.core-1.12.1] startup
[23.551s] [ext: omni.kit.widget.stage_icons-1.0.8] startup
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[23.583s] [ext: omni.kit.tool.collect-2.2.19] startup
[23.612s] [ext: isaacsim.examples.browser-0.3.0] startup
[23.632s] [ext: isaacsim.robot.surface_gripper-3.4.0] startup
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[23.760s] [ext: isaacsim.robot_motion.motion_generation-8.2.2] startup
[23.830s] [ext: isaacsim.robot.manipulators.examples-1.6.1] startup
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[23.942s] [ext: isaacsim.examples.extension-2.2.0] startup
[23.953s] [ext: isaacsim.robot.experimental.wheeled_robots-0.2.3] startup
[24.141s] [ext: isaacsim.robot.wheeled_robots-5.1.2] startup
[24.284s] [ext: isaacsim.examples.interactive-4.15.1] startup
[24.512s] [ext: omni.kit.search.files-1.0.4] startup
[24.516s] [ext: omni.kit.widget.calendar-1.0.9] startup
[24.526s] [ext: omni.kit.widget.extended_searchfield-1.0.31] startup
[24.601s] [ext: omni.simready.configuration-1.0.1] startup
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[24.618s] [ext: omni.simready.content.search-1.0.5] startup
[25.409s] [ext: omni.simready.content.browser-0.2.4] startup
[25.441s] [ext: isaacsim.gui.content_browser-0.3.2] startup
[25.455s] [ext: omni.kit.selection-0.1.6] startup
[25.465s] [ext: isaacsim.gui.menu-2.10.2] startup
[25.533s] [ext: isaacsim.gui.property-1.5.1] startup
[25.563s] [ext: isaacsim.gui.sensors.icon-2.1.0] startup
[25.584s] [ext: omni.behavior.scripting.core-110.0.4] startup
[25.618s] [ext: isaacsim.replicator.behavior-1.4.0] startup
[25.622s] [ext: isaacsim.replicator.domain_randomization-1.2.0] startup
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[25.846s] [ext: isaacsim.replicator.writers-1.4.0] startup
[26.071s] [ext: isaacsim.robot.policy.examples-5.1.1] startup
[26.246s] [ext: isaacsim.robot_motion.experimental.motion_generation-6.1.1] startup
[28.683s] [ext: isaacsim.robot_motion.cumotion-1.0.1] startup
[28.752s] [ext: omni.kit.numpy.common-0.1.3] startup
[28.757s] [ext: isaacsim.sensors.camera-1.7.0] startup
[28.829s] [ext: isaacsim.sensors.experimental.camera-0.1.1] startup
[30.759s] [ext: isaacsim.sensors.experimental.physics-2.2.0] startup
[30.802s] [ext: isaacsim.sensors.physics-1.1.0] startup
[30.838s] [ext: isaacsim.sensors.physics.nodes-1.3.0] startup
[30.862s] [ext: isaacsim.sensors.physx-2.5.0] startup
[30.902s] [ext: omni.sensors.net-1.0.1] startup
[30.911s] [ext: omni.sensors.nv.common-3.0.0] startup
[30.933s] [ext: omni.sensors.nv.materials-2.0.0] startup
[30.944s] [ext: omni.sensors.nv.ids-2.0.1] startup
[30.950s] [ext: omni.sensors.nv.lidar-3.0.0] startup
[30.970s] [ext: omni.sensors.nv.wpm-3.0.0] startup
[30.973s] [ext: omni.sensors.nv.radar-3.0.0] startup
[30.984s] [ext: isaacsim.sensors.rtx-15.14.1] startup
[31.064s] [ext: isaacsim.simulation_app-2.16.1] startup
[31.078s] [ext: omni.anim.curve.core-1.6.0] startup
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[31.377s] [ext: omni.kit.manipulator.camera-109.1.0] startup
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[31.614s] [ext: omni.kit.viewport.menubar.camera-107.0.9] startup
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[31.732s] [ext: omni.kit.viewport.menubar.settings-107.0.6] startup
[31.774s] [ext: omni.kit.window.console-1.1.7] startup
[31.801s] [ext: omni.kit.window.status_bar-0.1.9] startup
[31.811s] [ext: omni.kit.window.toolbar-3.0.3] startup
[31.820s] [ext: omni.ocio-0.1.1] startup
[31.824s] [ext: omni.replicator.replicator_yaml-2.0.12] startup
[31.887s] [ext: omni.rtx.window.settings-0.7.2] startup
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[31.962s] [ext: omni.usd.metrics.assembler.ui-110.0.0] startup
[32.001s] [ext: semantics.schema.editor-2.0.2] startup
[32.029s] [ext: semantics.schema.property-2.0.1] startup
[32.042s] [ext: omni.kit.menu.common-2.0.2] startup
[32.049s] [ext: isaacsim.exp.base-6.0.0] startup
[32.050s] [ext: isaacsim.replicator.behavior.ui-1.1.0] startup
[32.058s] [ext: isaacsim.replicator.grasping-1.1.0] startup
[32.096s] [ext: isaacsim.replicator.grasping.ui-1.1.0] startup
[32.127s] [ext: isaacsim.replicator.synthetic_recorder-2.4.0] startup
[32.150s] [ext: isaacsim.robot.manipulators.ui-2.2.0] startup
[32.169s] [ext: isaacsim.robot.poser-1.0.0] startup
[32.207s] [ext: isaacsim.robot.poser.ui-1.0.0] startup
[32.269s] [ext: isaacsim.robot.schema.ui-0.3.1] startup
[32.348s] [ext: isaacsim.robot.surface_gripper.ui-3.1.0] startup
[32.358s] [ext: isaacsim.robot.wheeled_robots.ui-2.2.0] startup
[32.369s] [ext: isaacsim.robot_setup.assembler-3.3.0] startup
[32.404s] [ext: isaacsim.robot_setup.collision_detector-0.1.0] startup
[32.434s] [ext: isaacsim.robot_setup.gain_tuner-3.4.1] startup
[32.517s] [ext: isaacsim.robot_setup.grasp_editor-2.2.0] startup
[32.546s] [ext: isaacsim.robot_setup.xrdf_editor-3.4.1] startup
[32.584s] [ext: isaacsim.sensors.camera.ui-0.5.0] startup
[32.593s] [ext: isaacsim.sensors.physics.examples-1.1.0] startup
[32.611s] [ext: isaacsim.sensors.physics.ui-1.1.0] startup
[32.618s] [ext: isaacsim.sensors.physx.examples-2.4.0] startup
[32.646s] [ext: isaacsim.sensors.physx.ui-2.5.0] startup
[32.657s] [ext: isaacsim.sensors.rtx.ui-1.3.0] startup
[32.668s] [ext: isaacsim.util.camera_inspector-1.1.0] startup
[32.679s] [ext: isaacsim.util.physics-1.2.0] startup
[32.696s] [ext: omni.anim.curve.ui-1.7.0] startup
[32.722s] [ext: omni.anim.curve.bundle-1.4.0] startup
[32.722s] [ext: omni.anim.shared.core-110.0.0] startup
[32.803s] [ext: omni.graph.bundle.action-3.10.2] startup
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[33.204s] [ext: omni.kit.converter.common-510.0.0] startup
[33.238s] [ext: omni.services.facilities.base-1.0.5] startup
[33.261s] [ext: omni.services.core-1.9.3] startup
[34.403s] [ext: omni.services.transport.client.base-1.2.5] startup
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[34.487s] [ext: omni.services.transport.server.http-1.3.2] startup
[34.756s] [ext: omni.services.convert.cad-508.0.0] startup
[34.815s] [ext: omni.kit.converter.dgn_core-512.0.0] startup
[34.986s] [ext: omni.kit.converter.dgn-510.0.0] startup
[35.034s] [ext: omni.kit.converter.hoops_core-511.0.0] startup
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[35.118s] [ext: omni.kit.converter.jt_core-509.0.0] startup
[35.201s] [ext: omni.kit.converter.jt-509.0.0] startup
[35.227s] [ext: omni.kit.core.collection-0.2.4] startup
[35.251s] [ext: omni.kit.hotkeys.window-1.4.10] startup
[35.362s] [ext: omni.kit.mesh.raycast-110.0.0] startup
[35.376s] [ext: omni.kit.preferences.animation-1.5.0] startup
[35.413s] [ext: omni.kit.property.collection-0.2.4] startup
[35.431s] [ext: omni.kit.property.layer-1.2.5] startup
[35.472s] [ext: omni.kit.property.physics-110.0.7] startup
[35.625s] [ext: omni.kit.quicklayout-1.0.12] startup
[35.638s] [ext: omni.kit.stage.copypaste-1.2.4] startup
[35.662s] [ext: omni.mdl.usd_converter-1.0.37] startup
[35.718s] [ext: omni.kit.stage.mdl_converter-1.0.8] startup
[35.728s] [ext: omni.kit.stage_column.payload-2.0.5] startup
[35.745s] [ext: omni.kit.stage_column.variant-1.0.20] startup
[35.783s] [ext: omni.kit.stagerecorder.core-110.0.2] startup
[35.803s] [ext: omni.kit.stagerecorder.ui-110.0.0] startup
[35.852s] [ext: omni.kit.stagerecorder.bundle-110.0.0] startup
[35.854s] [ext: omni.kit.tool.asset_exporter-4.0.5] startup
[35.879s] [ext: omni.kit.tool.remove_unused.core-0.1.4] startup
[35.889s] [ext: omni.kit.window.material-1.8.0] startup
[36.012s] [ext: omni.kit.tool.remove_unused.controller-0.2.0] startup
[36.030s] [ext: omni.kit.ui_test-1.4.3] startup
[36.062s] [ext: omni.kit.usda_edit-1.1.19] startup
[36.135s] [ext: omni.kit.widgets.custom-1.1.2] startup
[36.274s] [ext: omni.kit.variant.editor-107.5.8] startup
[36.487s] [ext: omni.kit.variant.presenter-107.1.3] startup
[36.530s] [ext: omni.kit.viewport.bundle-107.0.0] startup
[36.531s] [ext: omni.kit.viewport.rtx-107.0.0] startup
[36.532s] [ext: omni.kit.viewport_widgets_manager-1.0.9] startup
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2026-05-20T15:03:02Z [36,507ms] [Warning] [omni.kit.pipapi.pipapi] extension omni.kit.widget.cache_indicator-3.0.9 has a [python.pipapi] entry, but use_online_index=true is not set. It doesn't do anything and can be removed.
[37.109s] [ext: omni.kit.widget.collection-0.3.3] startup
2026-05-20T15:03:02Z [37,044ms] [Warning] [omni.kit.widget.cache_indicator.cache_state_menu] Unable to detect Omniverse Cache Server. File /isaac-sim/.nvidia-omniverse/config/omniverse.toml is not found. Consider installing it for better IO performance.
[37.173s] [ext: omni.kit.widget.schema_api-1.0.4] startup
[37.190s] [ext: omni.kit.widget.timeline-107.0.2] startup
[37.248s] [ext: omni.kit.window.collection-0.3.4] startup
2026-05-20T15:03:02Z [37,199ms] [Warning] [omni.kit.window.collection.collection_watch] Get collection from usdrt stage failed: Attach(): incompatible function arguments. The following argument types are supported:
1. (stageId: int) -> usdrt.Usd._Usd.Stage
2. (fabricId: usdrt.helpers._helpers.FabricId) -> usdrt.Usd._Usd.Stage
Invoked with: -1
[37.269s] [ext: omni.kit.window.commands-0.2.9] startup
[37.291s] [ext: omni.kit.window.script_editor-2.0.7] startup
[37.342s] [ext: omni.kit.window.title-1.1.8] startup
[37.354s] [ext: omni.kit.window.usd_paths-1.0.9] startup
[37.373s] [ext: omni.physics.isaacsimready-110.0.7] startup
[37.437s] [ext: omni.physics.physx.ui-110.0.7] startup
[37.549s] [ext: omni.physics.ui-110.0.7] startup
[37.592s] [ext: omni.asset_validator.ui-1.11.2] startup
[37.775s] [ext: omni.physx.asset_validator-110.0.7] startup
[37.887s] [ext: omni.physx.demos-110.0.7] startup
[38.417s] [ext: omni.physx.vehicle-110.0.7] startup
[38.734s] [ext: omni.physx.camera-110.0.7] startup
[39.089s] [ext: omni.physx.cct-110.0.7] startup
[39.239s] [ext: omni.physx.graph-110.0.7] startup
[39.364s] [ext: omni.physx.supportui-110.0.7] startup
[39.442s] [ext: omni.physx.bundle-110.0.7] startup
[39.442s] [ext: omni.resourcemonitor-107.1.1] startup
[39.458s] [ext: omni.services.facilities.monitoring.metrics-0.3.1] startup
[39.625s] [ext: omni.services.convert.asset-510.0.0] startup
[39.673s] [ext: omni.simready.explorer-1.1.4] startup
[39.735s] [ext: omni.kit.converter.cad-209.0.0] startup
[39.736s] [ext: isaacsim.app.setup-1.10.0] startup
[39.746s] Isaac Sim Full Version: 6.0.0-rc.22
[39.749s] [ext: omni.kit.window.stats-0.1.8] startup
[39.757s] [ext: omni.kit.profiler.window-2.4.0] startup
[39.821s] [ext: isaacsim.exp.full-6.0.0] startup
[42.214s] [ext: isaacsim.ros2.core-1.5.1] startup
[42.344s] Attempting to load system rclpy
[42.345s] Could not import system rclpy: No module named 'rclpy'
[42.345s] Attempting to load internal rclpy for ROS Distro: jazzy
[42.480s] rclpy loaded
[42.498s] [ext: isaacsim.ros2.nodes-1.10.1] startup
[42.810s] [ext: isaacsim.ros2.examples-1.0.1] startup
[42.835s] [ext: isaacsim.ros2.ui-1.4.2] startup
[42.879s] [ext: isaacsim.ros2.bridge-5.0.0] startup
[42.905s] Isaac Sim Full App is loaded.
[42.923s] app ready
2026-05-20T15:03:15Z [49,680ms] [Warning] [omni.ext.plugin] [ext: CesiumGS-cesium-omniverse-linux-x86_64-v0.28.0] Extensions config 'extension.toml' doesn't exist '/isaac-sim/.local/share/ov/data/Kit/Isaac-Sim Full/6.0/exts/3/CesiumGS-cesium-omniverse-linux-x86_64-v0.28.0' or '/isaac-sim/.local/share/ov/data/Kit/Isaac-Sim Full/6.0/exts/3/CesiumGS-cesium-omniverse-linux-x86_64-v0.28.0/config'
[49.769s] [ext: omni.kit.registry.nucleus-0.0.0] startup
[50.115s] [ext: cesium.omniverse-0.28.0] shutdown
[50.116s] [ext: cesium.usd.plugins-0.9.0] shutdown
I think the problem is that isaac-sim:6.0.0-dev2 updated to Kit 110 which is not yet supported by Cesium for Omniverse.
There’s an issue open for that here:
Until that’s supported are you able to use isaac-sim:6.0.0-dev1?