I had FSX Deluxe and ADE gave me bgl compiler errors and wanted me to update to Sp1a or higher. I followed the Wiki as close as I could but still got the error. Nothing I did seemed to update the SDK. Someone suggested that I find a copy of FSX Gold as it already was updated with Sp1a and Sp2. So I got a copy and installed it this afternoon after deleting my original FSX and SDK. After I got it installed, I loaded one of my airports into ADE, Still got the compiler error. I checked the FSX product version and it was the same as my original FSX. So I went ahead and installed Sp1a again. Now ADE gives me the desired No Issues found message. Made me think that Gold isn't already updated. So I tried to run Sp2. It told me I needed to update to Sp1a first. Now I have ADE telling me things are fine and Sp2 telling me I need to update. Should I just be happy that ADE is happy and leave well enough alone? Or should I try to figure out why Sp2 won't install?