I was working on a custom component when suddenly VC crashed 
After a reboot, when I insert my component I get a NULL stream error.
I cannot edit my model or see the geometry or do anything. Other components are working fine. Is there a way to fix the component?
Actually the solution was trivial and obvious… in the MyModels folder I found the .bkXXX Files with the autosaves and loaded the last version!
Probably the last saved version was corrupted. But good to hear you have those *.bk files.