After uninstalling/reinstalling so many times I realized there were quite a few files in the Program Files2K games directory that were not getting removed during the uninstall AND that Ccleaner failed to find. Removed those manually and re-installed again and after a few initial struggles I'm up and running pretty good......
Yeah, it's essential to uninstall anything properly to get good results. You can just use a program like CCleaner though to make it quicker. It has a RegistryIssues feature that removes lingering bits. There's also Glary Utilities, which has a pretty good reg cleaner. Both are free btw.
I'm such a stickler for thorough uninstalls I use CCleaner, Glary, Search Assistant, then look manually in the registry with EditFind searches just to be sure. CCleaner is probably the most commonly used unistall clean up tools.