Sounds like your layout and/or file may be damaged. Different versions of FileMaker may tolerate corruption that a different version does not, so that might explain why there was no problem in FileMaker 10.
You might run a recover on your file to see if any issues are reported.
Best practice is to not use recovered files but replace them with undamaged back up copies if at all possible. (You may need to savd a clone of a backup and then import data from your recovered file.)