When I say category I mean folder (directory), and when I say file I mean the items items listed beneath the folder icons. Right click those, you'll see it say 'edit' and 'sign off'.
Unless your installation and scanner are different AC does not hold onto it ...(well, it can if you use the TWAIN interface and leave some of the windows open, in which case you should minimize everything to check for that. But I doubt this is the case.)
Can you scan at all? Are you scanning by push button or controlling from the paperport application? If push button maybe you are scanning to the wrong folder? Probably unlikly, but your tech could and should fix that so you can scan straight to paperport.