Must be a Mac problem, I use 1.1 still here and there (on PC), and I've really never had any "crashes", the only problem I've had is the opengl screwing up here and there. I'd suggest first dropping the amount of RAM allocated to Carrara, programs tend to like to crash and eat all the memory completely if you give them to much;) You might want to change you video settings to software Aufde, that has been a woo of many users, 1.1 had much video problems, like I said thats the only problem I get. Do a quick search of the forum looking for "crashes" and you'll likely find some tips to keep things running smoothly. Brian