I import a model into Simplebim and the progress reporting of the import completes. Then the model trimmer workspace opens and you see the Objects and Properties palettes normally, but the 3D palette says ‘Loading 3D’. At this point the application crashes.
Solution
The problem is the registration of the 3D palette. This can happen when you install a new version of Simplebim side-by-side with an older version of Simplebim, and then later uninstall the older version and start the newer version. The solution is to re-install the new version Simplebim, which registers the 3D palette.