This is an old chestnut but . . . .
I'm still running 4.0c. I'm still getting V4 crashing out when I edit KF positions by deleting those I don't wish to have remaining, V4 crashes out of copied Media Text Events. I can move the KFs but Delete sends V4 South.
Now, if there is a fix I'd like to hear it. Otherwise I'd like to hear if anybody is getting success with V4.0d. Failing this, SoFo please cure. It's driving me bonkers!
Best regards,
Grazie