It's normal that opening CTRL+F12 at KCLT (or any other FSDT scenery with a menu) will open that menu. However, the 2nd entry should read GSX. If you want to call GSX directly, that's what CTRL+Shift+F12 does, by default.
correct i get the gsx option in the menu initially. however after selecting any option, gsx acts like it is enabled and working but at KCLT no ground units show up and the jetways stay static. nothing visually happens and no options can be selected from the gsx menu