Robohelp 11 continues to crash using FrameMaker 11 files

I am trying to import Frame files into a Robohelp project. I have tried to imports each document separately, to import the book file, and even to import the pdf. Robohelp crashes every time. The program worked fine when I last used it 4 months ago, so now I am stuck!!

Where do I start to troubleshoot? Our IT people do not know this program and cannot help.

Thanks