All the help above did not work for me on Windows 7 64 bit, WSH was still defective after it.
What did help was the answer in Microsoft's knowledge base http://support.microsoft.com/kb/949140 regarding issue 949140. After running the "Microsoft Fix it 50181", PSPad starts without error. -- <http://forum.pspad.com/read.php?2,48650,61325> PSPad freeware editor http://www.pspad.com
