---- Client Environment ---
・Minecraft 1.7.10
・Minecraft Forge 10.13.0.1199
・OptiFine HD Ultra A4
・OpenEye 0.6
・OpenModsLib-1.7.10-0.6-snapshot-224
・OpenBlocks-1.7.10-1.3-snapshot-431

---- Client Crash Report ---
http://pastebin.com/YNmJxsip

Crash when using the tank.
Please fix.

Ok, fixed. Can you tell me what liquid was in that tank?

Sorry.
It is a report from the server participants, I do not know.