http://paste.cisien.com/f/dee4ca2d.txt

Forge 1029
git build of Buildcraft. last commit i have sync'd is
commit a910795
Author: SpaceToad [email protected]
Date: Sat Feb 15 23:07:49 2014 +0100

Using the buildcraft pump to pull up some molten iron into a tank

Try again. Ticking block entity usually means that RNGod wants you to crash. And if that will hapen again, that's TiC issue.

Hi @Cisien, I'm going to try to enforce the updating policy (https://github.com/BuildCraft/BuildCraft/blob/BuildCraft-5.0.x/README.md) and close this one for now. Trying to keep issues open to things that have a champion. That doesn't mean that your problem isn't genuine though - you can discuss on http://mod-buildcraft.com/forums/index.php?board=2.0,