I have a Windows installation with no visible means of uninstall. Not listed in the Control Panel. No Start menu items. The program folder doesn't have any obvious uninstall program. I have 4.5.1 public 194665 on Windows 7 which I can't automatically upgrade because it reports it is a single user installation and there can only be one. I assume it must have been installed under a different user from the one I currently run as. I guess I'll probably have to delve into the registry to clean it out and start again. If so, what needs to go?