APP FUNCTIONS OK BUT PROMPTED FOR SERIAL EACH TIME APPS START 

Solution; 

1. Go to the HOSTS SET-UP folder and follow the instructions there then restart
   the app and put the serial in again then restart to check the issue is solved.

2. Start the app enter serial then close then delete the Adobe Epic folder 
   in the installation directory.

3. Try the steps in ADOBE LICENCE RECOVERY TOOL.

3. If that fails go to the CS4 LICENCE RECOVERY folder (LICENCE METHOD 1) and 
   follow the instructions there.