Possible Corrupt File - Cannot Add or Modify Records
I'm having some trouble with a FileMaker 12 database. It was recently closed improperly and now when I try to add or edit a record I receive the message "This record cannot be modified in this window because it is already being modified in a different window." There is only one window open in this solution. In the original file, adding a new record results in question marks in all fields.
I have tried saving a compressed copy of the file, cloning, and the recover function, and the "cannot modify" error persists. The question marks were resolved by saving a clone.
The error started just after I had finished making a large number of changes to the solution, so reverting to the last known good backup would require significant work to recreate that progress. Any ideas on how to proceed other than reverting to the last backup?
Thanks and Happy New Year!