I placed down a Vacuum Energy Output Hatch and I crashed. I believe that it has to do with the fact that I'm playing without IC2: https://pastebin.com/uHjGkQ03

facepalm yea, i forgot to exclude a method if ic2 is not present. derp. fixed for next version.

This seems rather strange, however, i'll go after it and release a fix with the next update - which will come soon-ish as i want to add/change a couple of things.

Just tested it, apparently it also crashes with Energy Input Hatches