I have problems with loading 3d models in .obj format.
Maybe I’m doing something wrong during the export or modeling.
After adding the model on stage number of polygons doubles every second.
Compiler error: Parsing failure.
Possible sources of problems: VRay, materials, modifiers.

Maybe you should try to import the object to the prefab application .
If you succeed, you will be able to export the object to another file. And than this file load.

Worth a shot, but I think there are some problems with parsing 3ds and obj files following the release of FP11.  I think the devs are looking into it.