I'm using Inventor 2009 Suite with service pack 2, and I have a corrupted assy which behaves perfectly as a subassy to a higher level assy, but will not allow me to open it to edit it. The 3 copies in oldversions will not open either (they're all dated within about a half hour of each other) so that option is not available.
I saw a similar thread with the same subject from back in 2008, but apparently the problem was persued offline as there are no postings resolving the issue.
Any ideas for debugging this problem? This particular assy is used on multiple upper level assys and I hate to think of rebuilding it and replacing it if I can help it (not to mention the ipn and idw associated with it)