i dont know why but all of a sudden my cargo doors do not function now, when i first installed the 747 everything was working fine, now i cannot get the nose , or the left side cargo door to open, i have tried many,many unused key combinations so far no luck, any ideas? ;note i have had them open 2 times in the last 2 days but thats it after many attempts, after i change the key combo do i need to reload the flight? restart fs9? any info is much appreciated, also was wondering where is the key combo info stored, what cfg file if any?

Do you have the correct power supplies set up? I beleive you need both APU generators operating