Back on Traktor and can't redirect it to my Ext. HD iTunes folder

Basically as the title states. I have the iTunes folder in the tree menu on the right in Traktor but it is so outdated. So I tried linking it to my current iTunes folder in my ext. HD but it won't allow me to click... Do I have to point it to an XML file? If so, I tried that as well.

Completely stumped here and never had a problem when I was on PC...on Mac now running Lion.

Any advice?

Edit: After reading for about an hour, I found I needed to rebuild my XML file for iTunes. Problem solved. Mods, you can delete this if you want.