That is just sad. I thought I was losing my mind. I render to TIFs ALL the time now (instead of just sometimes) when doing animations over a few seconds. Unfortunately, as someone else said, it still crashes, but at least I have the frames. What a PITA! SR3 didn't fix it for me, how about anyone else? Also, what does the RAM defragger really do and will it definitely help? Any negative side-effects of running it? Thanks! -Tim