Umberto the bglman_fsdt.dat was never missing, it was just corrupted(bad) and it was causing the sim to crash. im going to try again later when i get home as im at work right now. Would you mind uploading the "bglman_fsdt.dat" for me here just in case, its just so i dont keep asking anybody for help. :/ i fly a lot into those airports. especially LAX. Thanks so much