Probably. This is a known issue and easily repaired.
For More Information see: Phantom Record, damaged file message, Recover can't detect a problem
This is one of many acknowledged bugs that can be found in the Known Bug List here in the Report an Issue section of the forum.
It can also be downloaded as a database file from: http://www.4shared.com/file/8orL8apk/FMP_Bugs.html
great, thank you!
for the record, i am using FM 11 on a Mac. Cloning the file and importing from the main file fixed the problem.