Issue with glb2 export

[gregkwaste]

I'm experimenting with glb2 export for scenes with skeletal animations. I did try to import and re-export a sample file that I found in khronos's examples and it worked like a charm. However, when I work in a more complicated mesh of mine, my app simply closes without any warning or even the known "Access Violation exception". I've been experimenting and I think I have traced that the issue is related with the existence of bones in the mesh. When I remove all of the bones, export works. Even with a single bone with no vertex weights it still crashes. FYI, the same assimp.scene exports successfully when using fbx, or collada.