Goto C:\Program Files\Winamp\Plugins (or the equiv if you installed to another dir)
Remove the file : gen_nomad.dll
If there are any other files named gen_*.dll, temporarily disable them by renaming them with the .off extension, eg. gen_mircex.dll.off
Basically, gen_nomad.dll is a General Purpose plugin which is placed in the Winamp\Plugins dir by the SBLive/PlayCenter driver's update.
This is a known issue, and I can't believe that Creative Labs are still getting away with it!
btw, there are no General Purpose plugins included in the default Winamp setup.
Hope this helps.
btw, if you can't see any DLL files in the Winamp\Plugins dir,
goto Windows Folder Options -> View tab
Uncheck "Hide extensions for known filetypes"
Checkmark: Show hidden files/Show all files (NOT: Do not show hidden files)
DLL's are classed as hidden files under Window's default setup.
All of Winamp's plugins (default or extra) are DLL files.