I think this is a WinAmp error - see here...
http://forums.winamp.com/showthread.php?s=&threadid=161862&highlight=failed+to+find+the+skin+bitmap
You can do as they suggest in the answer or just take WinAmp out of the start up list (if it's in there)
Start / RUN / msconfig / OK / Startup / untick winamp
Peccavi, February 2009