I am having a serious problem with customize airport position. I use GSX Level 2 in Prepar3d V5.4. Everything was normal until a few days ago, I am enthusiastic about the Add-on. But now, when I try to customize the position, I can start the option and select the position, but in every situation or airport or aircraft, when I press "edit position" the simulator gets crazy, moving the aircraft all around the world and ending somewhere in the middle of the ocean. Then GSX and Couatl disappears from the menu and I must kill the simulator and start again. Everything else works fine, even other features of GSX, boarding passengers and all. Please help. I tried to go back to a previous backup disk but no progress. I tried also to reinstall GSX and GSX Level2 with no better results.