I must be a complete idiot.

I am new to vBulletin, and am running 4.1.7. The forums are currently turned off until I get the hang of the software and customize the look of the place.
Anyway, I followed your directions to a T except for the following:
I changed the name of the "images" folder to "images2" since there was already an images folder in the root of my forums and I did not want to overwrite that folder when prompted by my ftp client.
Other than that, everything was done the same. The fields show up to enter under my profile settings, but, when I link my FB and Twitter accounts (the only ones I want to use), and save changes, nothing shows up under my name within messages on the forums.
I've uninstalled the plug-in and deleted everything, starting from scratch 3 times and nothing.