A few months ago, I had After Effects (CS4) running fine on my computer. And recently I try to use it and the AE boot-up screen screen disappears after about 10 seconds with a beep and no error message. However, in safe mode its runs fine. Has anyone had a problem like this with a program and how do I fix it or figure out how to fix it?!
We can't know. You have not provided even the most basic technical info like system specs and other details.