You have not provided any system information, not told us what version of AE, no preference settings, no comp settings, no details about your footage and effects and finally no crash logs. how do you think we should be able to figure out what is going on? You need to do much better and provide all the necessary information.
I use a PC Windows 7, AfterEffects CS5.5 i dont know any other settings other than that.
AE CRASH AFTER SCROLLING wrote:
i dont know any other settings other than that.
Then find out.
What exact version number of AE CS5.5 do you have? Help>About will tell you.
Your composition settings will tell you your composition settings. And surely you must know what sort of footage you have in your scene and what effects you've applied.
Also, the exact wording of any and all error messages would help.