This sort of message is often resolved by uninstalling such an app and installing it again.
I cannot use DNS Preferred 10.1 after installing Windows 7. Error message is: "The user files you have selected cannot be accessed because you do not have sufficient privileges to use them or because they are currently accessed by another process."

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic