I've had AE for a few months now & had created a wiggle preset (w/ position and rotation). It's worked fine up until now. Now, Instead of the clip moving slightly from side to side, it seems to stretch out the entire clip. It's the same settings & comp setting but it's turning out completely different. Any idea why?
Check if you are using a comp with non square pixels and check. What kind of clip are you using with the wiggle preset? If it is a solid check that you are no using a solid with non-square pixels in a square pixel comp.
Bottom line: everything is NOT the same, it can't be. It's not magic. It's math. If everything were the same you would get the same results. A slow and careful comparison will reveal what's different.