If you've installed AE on more than 2 computers, you will need to deactivate it on at least one and you will need to install it on the new computer. Just moving the folders won't work.
Johnny Cuevas, Editor
"I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work."
---THOMAS EDISON on inventing the light bulb.