Bukkit

What steps will reproduce the problem?
1. "swear"
2. let UB kick you
3. see console

What is the expected output?
no error logged

What do you see instead?
http://pastebin.com/Q2bf86Y9

What version of the Ultrabans are you using?
3.1.0

What version of the Craftbukkit are u using?
CraftBukkit 1.7.2-R0.3 Build 3015

Please provide any additional information below.

I got a tip, that the problem lies there:

https://github.com/deathmarine/Ultrabans/blob/master/src/com/modcrafting/ultrabans/listeners/UltraBanPlayerListener.java#L289

<Hobbits|away>: 'spamcheck' is called async
<Hobbits|away>: and calls a line of code which is not supposed to be used async
<Hobbits|away>: all you need to do is wrap it in a "run next tick" scheduled wrapper