I recently reset my computer and after reloading all the different programs, I could not get the BGLComp to create a BGL file. I had also loaded MSXLM 4.0 SP3 previously. I opened a Command Prompt window, typed in the command string and no errors displayed. Parse completed, but no BGL. So, remembered there is BGLComp in ADE. Dropped the same file there and it created the BGL file. So, I wondered if it was some kind of Windows Permission problem. Moved the FS2004SDK from Program Files (x86) to just the C: drive and it worked perfectly. If anyone has this problem, it doesn't seem to matter where the compiler file is located and avoids the permissions problem. Unless someone knows of a reason to keep it under the Program Files directory.