Requires the Microsoft XML Core Services (MSXML) 6.0 to function properly [1].
If you are having trouble running Bglcomp, I can help if you tell me: Bglcomp Exe Fsx
It converts human-readable .xml files, which define object placements, textures, and airport layouts, into binary .bgl files [2]. Requires the Microsoft XML Core Services (MSXML) 6