i downland adobe photoshop 11 with any problems but it never open the application and when i try to open it this wil appear in the coputer "The application could not be installed because the installer file is damaged. Try obtaining a new installer file from the application autho"
Anyway, the message is very clear: the installer files is damaged. If you downloaded it from Adobe, download it again. If you have a damaged install disk, download the trial and use your serial number for the installation.