You need to remove the version that comes bundled with CS5. This is located in After Effects -> Plug-Ins -> Digieffects -> FreeForm. Keep the manual that will see in the Plug-Ins folder. The features are the same in FreeForm V2, but the speed has increased up to 8x faster with FreeForm V2. You then need to use the installer that you will find in your account on our site www.mettle.com/my-account