Strange problem with trap doors.

[palistov]

Trap doors' entity type is SwingDoor, so they should be able to be locked/unlocked. On that note, make sure the trap door is an entity from the entities/doors/ directory. I don't believe there are any trap-door entities that AREN'T SwingDoors, but check just to be sure. Have you tried deleting the .map_cache file in your maps folder? Give that a shot.