Been doing a piece with many layers. While adjusting the opacity of the latest layer it froze. I can do nothing with it. Can't save it. . .

Every pull down comes down ghosted. Lots of layers. Did not crash the computer.

I was dragging the opacity slider back and forth when it just stopped.

It did however allow me to save it when quitting and I could re-open it with everything intact -- where it had frozen (PHEW!)

MAC 10.4.10

QT 7.1.5 (only mention that because you said that 10.4.10 & QT 7.2 were a problem in another thread.

AR 2.5