skined mesh

Hi everyone,
I created easy model with bones,skinned mesh and animation in 3DS. I need to access to bones from my code. I exported this model into dae and next with collada2glTF 0.8 to gltf file.
I used this code from tutorial to add my model to globe in Cesium:

var viewer = new Cesium.Viewer('cesiumContainer');
var scene = viewer.scene;
var modelMatrix = Cesium.Transforms.eastNorthUpToFixedFrame(
    Cesium.Cartesian3.fromDegrees(-75.62898254394531, 40.02804946899414, 0.0));
    var model = scene.primitives.add(Cesium.Model.fromGltf({
    url : '../SampleData/models/CesiumGround/example.gltf',
    modelMatrix : modelMatrix,
    scale : 200.0

But I got an error:

An error occurred while rendering. Rendering has stopped.
TypeError: Cannot read property 'transformToRoot' of undefined
TypeError: Cannot read property 'transformToRoot' of undefined
    at rr (http://localhost:8080/Build/Cesium/Cesium.js:443:17117)
    at _r.update (http://localhost:8080/Build/Cesium/Cesium.js:443:27972)
    at a.update (http://localhost:8080/Build/Cesium/Cesium.js:457:15103)
    at Tt (http://localhost:8080/Build/Cesium/Cesium.js:459:13328)
    at xt (http://localhost:8080/Build/Cesium/Cesium.js:459:14030)
    at Mt.render (http://localhost:8080/Build/Cesium/Cesium.js:459:20433)
    at P.render (http://localhost:8080/Build/Cesium/Cesium.js:464:23489)
    at t (http://localhost:8080/Build/Cesium/Cesium.js:464:10458)

this dae file work fine in ThreeJS and Blender
I didn't find topic for this error in google
Has somebody idea what is the problem?

Thank you very much.


I found solution. I replaced bones with dummy in 3DS max, exported into FBX, opened in Blender, exported into collada and dae file converted in glTF with


And I translate and rotate pivot of skinned meshes in 3ds Max in [0,0,0]

Hi, we recently fixed a bug related to skinned mesh loading that may solve this problem. Do you have the original dae/gltf that I can test with? You can also try running it yourself with the latest code on master.