Im using Lapito's Galacticraft Modpack and after some time of using the digital miner the server crashes on startup
http://pastebin.com/kNVjpNLF

I'll try to help, I must admit I am not 100% sure after seeing the crash log.

As far as I remember NullpointerException is a sign of lacking amount of memory for Java (Java is extremely memory greedy sometimes for no reason, depending on what you do or how many mods you have)

So to me it would seem that you might need to assign more memory to it. Were you chunk loading the digital miner? That might also cause massive amounts of memory needed depending on the loaded size.

While TEs really like ticking nullpointers, this one looks like a real bug.

I tried to assign more memory, I went from 4GB to 8GB and later 10GB but it would still cause the server to crash without letting me do anything, and no I wasn't chunk loading.

This was fixed with the v7 changes.