key not unlocking door

[SiderealStop]

SetSwingDoorLocked neither locks nor unlocks level doors; it is used for swing doors.

To elaborate...If you're using a level door, one that moves you from one map to another, it does not swing open like a normal door that leads from one room to another on the same map. A normal door, I'm guessing, when 'unlocked' using SetSwingDoorLocked doesn't technically unlock it, it makes the door able to swing which makes it look like it's being 'unlocked'. I may be completely wrong there, but basically yeah - I'm pretty sure you can't unlock a level door using SetSwingDoorLocked. I'm not sure myself how to unlock a level door, so if that's what you're using then I can't help. Just wanted to elaborate on what Your Computer said. =3