Hey guys.

I'm reporting this on behalf of the Hermitcraft guys. The following crash was obtained after placing a quarry in the nether. I am not sure how this is connected though. I am unsure if there was one in the nether but that is where the original crash originated.

The nether had to be rolled back in other do allow the server to be reloaded.

http://pastebin.com/VQqzgnE1

That's really odd. I will look into it - not sure whether this is easy reproducible though.