I had the same problem and got fed up reinstalling it for it not to work. My problem I believe was that I had the zoom set to high and reduced it to 100% removed flash from the computer and rebooted and then installed the flash update again and it worked.
Lots of folk having problems with it so it is a bit hit and miss for repair. Can you download it to your computer without running it.Then remove the other one from add remove and reboot into safe mode and then run the one you have downloaded to your computer.
It took me almost a fortnight to get it sorted and was a bit frustrating.
A lot of programs use flash that is why it is better to reboot after uninstalling.