First join the club.  Second, try Carolyn’s advice from Adobe.  Apparently “Anytime you uninstall then reinstall the Flash Player plugin you must repair disk permissions. Adobe mentions this on their site. http://kb2.adobe.com/cps/000/2dda3d81.html

Quit any open applications/programs. Launch Disk Utility. (Applications/Utilities) Select MacintoshHD in the panel on the left, select the FirstAid tab. Click: Repair Disk Permissions. When it’s finished from the Menu Bar, Quit Disk Utility and restart your Mac. If you see a long list of “messages” in the permissions window, it’s ok. That can be ignored. As long as you see, “Permissions Repair Complete” when it’s finished… you’re done. Quit Disk Utility and r*estart your Mac.*”  Apparently this fixed the issue for the individual.