This is from a site called MacOSXHints………..
Control click on the application and select Show Package Contents from the pop-up menu. Navigate into the Contents -> MacOS folder, and then make an alias to the After Effects file in that folder. Place the alias somewhere easy to get to, like your Desktop (and/or drag it into your Dock for quick access). Now you can use this link to open After Effects, and it will open as many times as you click on the link. Note that it will open the Terminal also, and show all the open process.
Mark