Found the solution, in case anyone else has the same issue:
QUOTE
(On 10.5.2) I uninstalled Flash using the previously posted uninstaller. I then deleted the Flash folder in the Library [(Name Directory) > Library > Preferences > Macromedia > Flash Player]. Reinstalled Flash, and voila!
This was posted by Marowan in the Photoshop Express forums at Adobe.
The uninstaller is here: http://kb.adobe.com/selfservice/viewConten...7&sliceId=1
No problems now.