https://www.dropbox.com/s/vy95owx801jye3z/crash-2015-08-05_21.42.27-server.txt?dl=0

I did change some of the world generation settings so here's a copy of my config as well in case that was at fault

https://www.dropbox.com/s/krn4k0cp35l5f6f/Botania.cfg?dl=0

EDIT: Definitely something I did to the config as generating a new one fixed the issue, going to attempt to change the config again and hopefully I don't get this issue again