I am a little knew at this. My phase 2 is loaded and I can play it I wanted to download an add on and install it. It shows up as installed but when I try to play it it says improper aircraft or mission file failed to load and display goes crazy. Maybe I need instruction or direction on how to properly install a mission and get it started. I spent 32 years in the army thats probably my problem. My thanks to anyone who has pity on me and helps.