Problem World exploring and crashing server.

[Kianos]

Hi guys. I have new problem. One player starts explore world and crash server. I want to know why its happens.

http://pastebin.com/xzyA1frK

I using Linux. Its on dedicated server. Now using current version of FTB ultimate.

If you will need more information just say.​

 

[cjm721]

Two things are accessing the chunk at once. Either a mod is doing something it should not be or your server did not turn off properly and one is still running in the background (have to see process to turn it off)