In my map, so far, I have an outside area and an inside area. It's not planned to make sense, because I'm going to use it as the base for a drawing, but still. My info_player_start is in the outside area, and to get to the inside without noclip I've made a door.
Only this door won't work.
I've got two trigger multiples, one on each side, to activate it, but it still won't open.
To make matters worse, the inside area appears to be leaking but isn't. Instead of a lit up room, I get, well, nothing. No world at all, according to noclip. I've tested it, there's a monster_scientist in there, but I still can't access the inside properly.
I can't see anything wrong with the compile log, but I'll post it if you need it.