Norton Quick Scan and Full Scan completely unresponsive?

So norton is giving me an alert that it's been awhile since I've run a scan, so I open Nortin Internet Security, click Scan Now, and it gives me the options: Computer Scan, Reputation Scan, and Scan Facebook Wall.

When I click Quick Scan and Full Scan, nothing happens at all. No errors, no messages, no popup windows, no scan verification. The program doesn't freeze or anything, and I can continue to navigate to other menus and do other things on my computer at the same time, it just doesn't do ANYTHING.

Very confused by this, and I haven't found anything pertaining to this subject on these forums yet.

I ran Live Update after first discovering this problem, and it downloaded 6 new updates, but it didn't change a thing.

Any help is greatly appreciated.