Sometimes you can find yourself in the situation where you have uninstalled a game but forgot to unpatch it. If so the Remove Patch and Edit Path buttons in Game Manager will be greyed out.



You can manually remove the old path file by deleting the relevant game file in: c:\user\Your_User_Name\AppData\Local\SimTools\GameManager\GamePathSaves

Credit @eaorobbie: http://www.xsimulator.net/community/threads/how-to-unpatch-plugin-without-game.5831/#post-61244