Hi, My name is Tyriael_Soban.
I'm a tester for Infitech 2 - http://forum.feed-the-beast.com/threads/1-7-10-infitech-2-modpack-v1-1-9-gregtech-galacticraft-hard-mode-modpack-updated-10-30-2014.50185/

A couple of nights ago, i encountered a tesselator error when tinkering with void pipes, initially both myself and Jason McRay had believed it was railcraft's turbine that caused the crash, but i was able to replicate it later, without the turbine: https://github.com/JasonMcRay/InfiTech-1.7/issues/82 - as you can see - was unable to make a third screenshot, as my client bombed out entirely and became a white box instantly after crashing.

I managed to replicate the issue a third time using a fresh world and only vanilla stone, in each instance of testing my client hung and crashed to a tesselator error upon covering over the void fluid pipe, it did not matter if i clicked on the pipe or not to place the final block

Could someone else look at this issue? I have no idea about most of the rendering code myself.

Expect a fixed release today. Thanks, @immibis!