For your information there is a report a bug forum that includes a thread that tells what info Filemaker Tech would like to know so that they can better help you.
In your case, it may be that there are problems with the file itself.
Try recovering the file and if it recovers successfully, test the recovered file to see if that fixes the problem.
Note: I don't recommend using your recovered file. If recovering the file fixes your problem, take a back up clone of your file and import the data from your recovered file into it.
It's a long shot, but.. did you commit your new record?
Is their something in the relation used in that particular TOG which filters records?