ipart error in Autodesk Inventor 2008

[Doragan]

Hi all, I was working on an ipart in Inventor yesterday, and I got the error message in around 60% of the parts saying this when I opened them:
"errors occured while setting factory to specified member"

The part seems to work, but I get this message. Any ideas?
Chris

 

[rollupswx]

Zip and attach the part.

 

[Doragan]

Work confidentiality rules won't let me.