Bukkit

What steps will reproduce the problem?
1. Join game, using autojoin sign
2. try to do /cw leave
3. "[Castlewars] you have left the game". appears in chat, then instantly "an internal error occurred while attempting to perform this command"
4. Console outputs error. Pasted here http://paste.ubuntu.com/7586988/

What is the expected output? What do you see instead?
Expected output is, player leaves game and is moved to stop spawn

What version of the product are you using?
from /ver castlewars;

Castlewars_2.0 version 1.7 castlewars 2.0

Do you have an error log of what happened?
http://paste.ubuntu.com/7586988/

Please provide any additional information below.
All spawns work correctly, I have set them again to make sure. Likely issue is the new spigot scoreboard API

Additional server information; Server is running CraftBukkit version git-Spigot-1487 (MC 1.7.9) (Implementing API version 1.7.9-R0.3-SNAPSHOT)

Well i see what the problem is, There are multiple plugins running at the same time, they all use the event PlayerTeleportEvent. The problem is that there are too many plugins reaching PlayerTeleport, thats why spigot skips some plugins. Then you get a nullpointer on castlewars because.

Sometimes you can just fix this by reloading the server.

i have the same problem, how should i fix it? perworld plugins doesnt seems to be the right thing