APP CLOSES WITH NO EXPLANATION =

Solution;

1, Go to the CS5 LICENCE RECOVERY folder then the DLL FILE  folder and then
   copy the original 32/64/both dll files and paste and replace the ones in 
   the Adobe programe directory.

2, Reinstall the application over the existing application, once finished DO
   NOT replace any dll files.

3, If that fails go to the CLEAN INSTALL folder and follow the steps 
   there.