Plug-ins/Fliters X 2 in Photoshop 7

I'm not sure if this is a Windows XP problem of Photoshop 7 problem. And definitely don't know what to do about it. When I tried to open Photoshop yesterday, I got a "Scratch Disk almost full" message and it wouldn't open. I didn't have time to check into it yesterday. So when I tried to open Photoshop today, it opened fine. But now it is listing all the plug-ins twice in both the Filters dropdown and under help. I checked the Photoshop folder and none were duplicated there. I know I need to partition my hard drive and install my scratch disks to another partition from Windows, but, just figured this out and haven't had a chance yet. Will doing this correct this problem or do I need to do something else too. Thanks in advance for any help.