I just spent a goodly 45 minutes chasing down just why a sequence was staggering, fllashing and then Whitep-out. Couldn't see anything revealing in TM. Check Proj Settings. Made a separate Veggie of just that seq. Nothing. Checked my GPU Accelo. Hmmm... I'd let the RAM build at 2gb - oops . . Bashed it back down to 200mb, now all is right with the World.
I shouldn't be let loose on this stuff. 😊