I'm all good now - uninstalling and reinstalling PinballX resolved my problem. After realizing the paths in the reg entries I posted were missing a folder between E:\ and PinballX it all made sense. I believe I got myself into this situation my Installing into E:\Pinball\PinballX, hitting some other problem, reinstalling into E:\PinballX (without uninstalling the first), realizing that didn't solve my problem, then deleting that and using the original. Horrible mistake, entirely my fault. Thank you so much for the help.