I have upgraded from Windows 8 Community Preview to Windows 8 Pro, as directed.

Now I am having compatibility problems with some of my video editing apps.

Furthermore I have just downloaded two new products including CyberLink_PowerDirector11_Ultra which is supposed to be 100% Windows 8 compatible. The downloaded install .exe file does not run. Neither did the downloaded .exe install file for VideoPad.

Suggest you do a refresh and reinstall your apps, because this is one of the side effects of upgrading from the preview to the final release.

Regardless you can do it, its not supported.

8refresh
Here is what will happen when you refresh your PC:
· Your files and personalization settings won't change.
· Your PC settings will be changed back to their defaults.
· Apps from Windows Store will be kept.
· Apps you installed from discs or websites will be removed.
· A list of removed apps will be saved on your desktop.

These steps will take you through refreshing your PC:

· Press Windows key + C on your keyboard to show the Charms bar (If you are using a touchscreen: Touch the right edge of your screen and swipe your finger to the left)
· Click Settings
· Click Change PC Settings
· Click General in the left column
· Under Refresh your PC without affecting your files, click Get started
Then follow the instructions that will be provided on the screen to refresh your PC.