Have just got same problem on 2013 SP3.
Moreover, IP crashes on Export to DWF of the previous (openable) version of ipb (Autodesk Inventor Publisher has stopped working).
Sometimes it claims to have send some data* to Microsoft! ... not to Autodesk
Unfortunately files contain IP, thus can't be shared.
Do you have any "user instruction" to folow in order to repair file without sending them out?
I am really sorry you meet this issue.
You can let me know the mail address and then I can send you the request to share the file just to me. we need the file to do the investigation to get the reason why this happen since this issue can't be reproduced at my side.
I can't remember any special steps.
IPB file tahat is now can't be opened was just saved.
I mean of course there were some modification to storyboard mada in comparison to previous (health) version of file.
But as soon as my steps were not video-captured I can't say what they exactly were.
For us it looks like we can't open correctly saved file.
Thanks for the quick reply, we will continue to keep tracking this issue, if you have more detail information to reproduce, please let us know.