if all else fails try to do a repair of WLM. to do this go to Program and Features, click the program, when it comes up to uninstall it will ask you for other options, pick Repair, let it repair and see if this fixes it.
If not you will have to do a full uninstall. Once it uninstalls, restart the computer even if it does not ask for it, Go back to Microsoft website and pick up another copy of WLE
see if that works