Have you recently "removed" any applications from your system? And by "removed" I mean, maybe, perhaps you did not use the application (or system) uninstall (to "cleanly" delete the app)? If so, perhaps these menu items are trying (in vain) to refer to functionality in the missing app.
When I right-click on my Desktop, my "ordinary Desktop menu" appears like this (see attached).
Note that between the "Paste Shortcut" and "New" menu items are menu items for 3rd party applications ("SVN Checkout..." and "TortoiseSVN"). If I were to "incorrectly" remove "TortoiseSVN" (not using the app/system uninstall - maybe just delete some/all files instead), perhaps I might get the same "strings Windows can't find" message.
Try going to regedit and selecting HKEY_CLASSES_ROOT\Directory\Background\shellex\Con textMenuHandlers" That's where the shortcuts are added into the context menu. You will most likely see some folders that do not need to be there. After backing up your registry, delete thos folders.
Just don't delete the "New" folder. The rest are fair game.
The Paste and Shortcut are only active when you have copied something to paste. Not sure about the Undo Cpy, as mine does not have that.
Success is the ability to go from one failure to another with no loss of enthusiasm.
~ Winston Churchill ~
Hmmmm, I don't know. It seems a little too convenient that Rich knew EXACTLY what registry key to edit. I would do a search on your system for bspears*.exe and make sure Rich didn't hax your system and drop a trojan pop star in there.
9 out of 10 people I prove wrong agree that I'm right. The other person is my wife.