chrysator , It's JVM crash. Probably native libraries/drivers bug. I can't do anything about it.
Builderb0y , I guess it's MCPC+ with plugin for multiple dimensions. It's known bug. I use IC2 API for syncing data to client and IC2 API implementation had this problem. As far as I remember it was fixed in either MCPC+ or IC2, but I don't remember exact versions.