I have a problem, I've been working on a project for a couple of days and everything was going great until today.  I tried to import a .cam file to support my calibration and things started to go weird.  The file couldn't be saved, exported or anything and the file size dropped to 0kb.  I think this has happened before, but haven't been able to pin point how it happened.  Is this a bug or shouldn't you re import cam files?

Hello Mark,
this was a bug we saw together when you came to visit us that had been (normally) corrected. Which version are you using ? IM 3.0 release or beta ?
I will send you the IM 3.0.1 if needed.