Everything was fine with Acrobat X Pro (installed as part of CS6) until today. I used it to view one file and then about an hour later a click on its shortcut on the Windows 7 taskbar produced nothing. A similar result for the executable file in the Windows Program directory. I tried a repair from Control Panel | Programs and Features. I have rebooted the computer. The other programs in CS6 seem OK. I have not tried an uninstall and reinstall yet.
Any idea what the problem may be?