Greg, just tried to run a server with latest GT.
It works, no crashes whatsorever, but the log is spammed in an excessive way.
I do not even know if GT is causing this, but I saw you recently done something NBT related.
I most likrly think it's ForgeEssientals, but since theres no crash I do not know more.
http://pastebin.com/aCLWp6bg (Spammed insanely, ~200MB latest.log after half of a day running)
If you're sure GT has nothing to do with that, please tell me so I can exckude another mod searching the cause of this
Also happens in SinglePlayer, so ForgeEssientals will be crossed out then.