Can't open saved .dn file

Hello, we save our 3D models from 3DS Max as FBX files and I can easily insert and edit them in Adobe Dimension. But after saving the project I can't open the file anymore.  No matter which drawing I try. I can't open the .dn file afterwards.

Here are the ERROR lines from the log file:

gbl       Error   7448ms> RENDERCORE ERROR: GL Render Target should not have a depth buffer attached, not anymore.

gbl       Error   7448ms> RENDERCORE ERROR: Bad Context or bad FBO attachment