Bukkit

The door links work fine you guys, the problem is your understanding of HOW they work:

1. Make spawn and set to some wave number
2. Make door and set to some wave number
3. Link the door to the spawner

How it works through example:
I have a spawner set to wave 15
I have a door set to wave 10
I have linked these doors and placed a purchase door sign next to the door

If I purchase the door, the spawner will activate BEFORE wave 15 (unless wave 15 has already been reached)

If I do not purchase the door, and the door is set to wave 10 and opens on wave 10 BUT the spawner is set to wave 15, the spawner WILL activate on wave 10 when the door opens.

The doors control the spawners! The spawners DO NOT control the doors!

Another example:

1 spawner set to wave 5
1 door set to wave 2

If I purchase the door before it opens on wave 2, the door will open and the spawner will activate. If I do not purchase the door and it opens automatically on wave 2 the spawner will activate on wave 2 as well.

Another example:

1 spawner set to wave 20
1 door set to wave 25

If I purchase the door before wave 20 the door AND the spawner will activate, if I purchase the door after wave 20 but before wave 25 (when it automatically opens) the spawner will have already activated automatically and the only the door will open. If the spawner is set to a LOWER wave than the door, the spawner WILL turn on automatically at that wave but WILL NOT open the door.

The doors control the spawners! The spawners DO NOT control the doors.