master copy of FileMaker is frozen, clover instead of cursor, no fields are accessible
Operating system version
Mac OS X
Description of the issue
When opening the file several times in recent weeks, there was a notice that file wasn't closed down correctly and it may be corrupted. The file is now opened on the desktop and nothing within is accessible as the cursor is a cloverleaf. The file can be closed and reopened and this doesn't change anything. Computer has been restarted. All users are able to connect to the file via network and access it completely without noticing any issues. Please advise.