Hey Guys, I know this post is a little old, But hopefully this helps everyone else who maybe having this issue. Once you have deleted the acutual files from you C: dive, or where ever you have it installed. You need to go to Start and in the search bar type in regedit if you are on windows 7. from here you will want to click on Edit->Find. and do a search for either dotjosh, or just commander. In my case I just did a search for commander, but if you have any other programs with the name commander in it, you may just search for dotjosh which is part of the name of DayzCommanders development company. Anyways, just keep searching and deleting everything that has that name in your registry, once you do that, you should be good to go. Hope this helps. -Ghost Edit: just saw OP's post, this is just the steps that worked for me.