I was going through the tutorial on SDK installation, so at a certain point I ran the ADE-check tool (see attached). So I discovered that my FSX.exe is Acceleration (10.0.61637), while all other fsx files (dll's etc) in root directory are SP2 (10.0.61472). Surprisingly, I have the Deluxe version CD, updated with (downloaded) SP1 and SP2. Never owned or used Acceleration version. The same for SDK; I have the version included in Deluxe, updated with SP1a and SP2. I really cannot understand how this can be the case, or what could upgrade the fsx.exe to 10.0.61637 leaving everything else to 10.0.61472. How this can be the case? Please help me here to understand.