http://pastebin.com/BT6TG2wR
Paper 1031
Plugins:

http://pastebin.com/NCZsCvax - second crash today
I'm just going to close tickets that you open without the bare minimum information from now on.
http://pastebin.com/zDZGAivT I fell again
http://pastebin.com/ZjHCLyj3 this may be because of this?
Given plugin AdvancedAbilities is obfuscated (as much as stack trace tells me). Nobody knows what it does exactly (except author(s))
but then what could it be?