Does this happen only from a specific file or can you create a small test file from scratch and get the same crash?
If other files don't show this problem, you likely have a corrupted file. You can check this by launching FileMaker without opening this file and then use Recover from the File menu to recover the file.
Best practice is to not use recovered files, but to replace the damaged file with an undamaged back up copy if at all possible. You may need to save a clone of the back up copy and then import data from the recovered copy to get the most up to date data possible.
Thanks! It was just the file that was corrupted. I appreciate the assistance.