Following automatic update to Dell Support Center Version: 3.2.6032.47 the middle tray button on my Dell Inspiron 15R (N5110) no longer launches the application. Program can be started via Start > All Programs > Dell Support Center but stutters when using some features and becomes completely unresponsive if I attempt to modify any preferences in the settings menu.

I've already tried uninstalling/reinstalling Support Center several times, repairing/uninstalling/reinstalling QuickSet, deleting orphaned folders and removing/changing registry settings as suggested in another post, all without success as the same problems persist.

I'm running Windows 7 Pro 64-bit and all other Dell drivers and software are up to date.