All you have to do is reapply(Like streak said) then go into your binaries folder, then scroll down and find UnrealFrontend. Double click that and it will open up a new window. After that, click the "Script" button around the top left of the window. A mini drop-down menu should appear. Click full recompile, and let the scripts recompile. After that, just run the game and you should be set!