Minecraft Version

1.12.2

Forge Version

14.23.1.2575

Mod Version

0.2.1-101

Describe your problem, including steps to reproduce it

Crash when removing closing pneumo-door

crash-2017-12-25_22.01.37-client.txt

Reproduced and fixed, thanks! We mostly tested the mod in creative worlds, where this does not happen :). Fixed in the version that will be uploaded to Curse in a minute!