I currently have G2 loaded on 3 of my machines and they all run fine. When you register it to get the updates just be sure you remember you use the same password or it will not work. If you need to erase the registration password you need to call Hobbico's Techinal Support line to erase the information. You will need to tell them the serial number of your G2 and your registration name and address for them to erase your current password.

Hope this helps.
Ryan