FCPX crashed 30 times modifying 40 subtitles

I modified aprox 40 subtitles (using "basic title"). I selected and then changed the "outline" colour from the default red to black. Nearly every single modification led to a total crash of FCPX. My FCPX never ever crashes, even when I am doing really complex stuff. Strange ...

I can't seem to replicate the issue in FCPX 10.3.2. Just tried turning on the outline and changing to black.

Hi game-b
Was the video created in earlier versions of FCPX?
Are any of your titles created using 3rd party plug-ins and if so are they updated?
You could also have non compatible fonts.
Finally you can try to delete preferences by holding down Option + Command keys on FCPX launch, then delete preferences.

Hope this helps, Greg

Sorry for responding so late. Resolved. Cheers

How did you resolve it?