Are you sure you followed the directions for your OS correctly?
Basically, the problem is that the 'Program Files' directory became protected in Vista and later OS's. For the old IDE, you can overcome this by running it as administrator. The new editor doesn't have this problem.
Or you can overcome all problems by installing DBPro somewhere outside of 'Program Files' and into another directory - I use this method as I synchronise my development environments between different machines and everything in that directory is stuff that needs synchronisation.