Shut and Play world

I am sorry for my poor English.

Please try to send me logs from both Minecraft runs.

(Also, this might be fixed in the 6.1.5 source - I am not sure)

@tokoku-11: Can you replicate the bug on http://asie.pl/buildcraft-6.1.5l.jar ?

It don't happen on BC6.1.5l.
Thank you.

already Unnecessary? logs
https://www.dropbox.com/sh/vzwcphczey7k79d/AADZsN5Q1PTBeTn0B259oPula?dl=0

Still happens.
http://hastebin.com/yejapenuri.crash