I'm running version 1.2.3 of Minecraft (Windows 7) and I didn't managed to make it work. Here is the process I follow: 1. Launching trainer in Admin mode 2. Launching game in Admin mode 3. Moving around a collecting a couple of items, opening inventory 4. Alt-TAB to trainer 5. Alt-TAB to game and then pressing F1 I don't get the Activated message. Any idea ?