# Load 3D Tiles from external sources to Unreal **URL:** \ **Category:** Cesium for Unreal\ **Created:** [April 16, 2021, 8:49am UTC](https://community.cesium.com/t/load-3d-tiles-from-external-sources-to-unreal/13193 "2021-04-16T08:49:43Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![Marco13](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/marco13/32/2757_2.png) [@Marco13](https://community.cesium.com/u/Marco13)\ **Post date:** [April 17, 2021, 11:54am UTC](https://community.cesium.com/t/load-3d-tiles-from-external-sources-to-unreal/13193/2 "2021-04-17T11:54:57Z")
The respective resource _might_ not be accessed because the tileset is not in the view frustum of the camera (_edit: although it should at least access the top-level `tileset.json` file. If this is not happening: Is there any output on the Developer Log of the Unreal Editor?_). Double-clicking the tileset in the World Outliner should center the tileset in the view, and cause the requests for the tile data to be sent out. * * * But… the data indeed seems to be based on an old version. Specifically, the B3DM files of the tileset seem to contain glTF 1.0 data, because it prints error messages > LogCesium: Error: [2021-04-17 13:44:35.306] [error] [GltfContent.cpp:30] Failed to load binary glTF from [https://vectortiles0.geo.admin.ch/3d-tiles/ch.swisstopo.swisstlm3d.3d/20201020/5/18/14.b3dm:](https://vectortiles0.geo.admin.ch/3d-tiles/ch.swisstopo.swisstlm3d.3d/20201020/5/18/14.b3dm:) > - Only binary glTF version 2 is supported, found version 1 It could be possible to upgrade the tileset, using the `upgrade` functionality from [https://github.com/CesiumGS/3d-tiles-validator/tree/2.0-tools/tools](https://github.com/CesiumGS/3d-tiles-validator/tree/2.0-tools/tools) (note that this specific branch has to be used), but there _might_ still be an [issue](https://github.com/CesiumGS/3d-tiles-validator/issues/213) with the resulting glTF data, which is currently investigated. --- _[View the full topic](https://community.cesium.com/t/load-3d-tiles-from-external-sources-to-unreal/13193)._