Possible Fixes

Yes

Modpack Version

10-2.11

What happened?

While making a huge extreme reactor's reactor, to accelerate the process of filling the spaces between fuel rods I tried to use the RFTools builder to place liquids in the selected area, upon starting the builder with a mekanism tank on top of it(i didn't try tanks from other mods), the server I was playing on crashed. I reproduced the exact scene in singleplayer and it crashed too, giving the crash error that you can see in the following image.

And here you can see how I've reproduce the behaviour that made the game crash, the Builder was on ignore redstone setting before starting it.

Crash Log

https://gist.github.com/clugiamp/07e4fa66659f81f1f5ca4fcf01e8c016

Latest.Log

No response

Updates, when the builder detects a liquid inventory on top of it (be it tanks able to auto output or pipes), gives a nullPointerExeption, tested in the latest version with different tubes/pipes and tanks seems that there's no way to input liquids in it