Getting the same after updating to 2.1.3, server ran for a few minutes then.
java.lang.ClassCastException: java.util.SubList cannot be cast to java.util.LinkedList
at thermalexpansion.part.conduit.item.ConduitItem.truncateStuffedItems(ConduitItem.java:914)
java.lang.ClassCastException: java.util.SubList cannot be cast to java.util.LinkedList
at thermalexpansion.part.conduit.item.ConduitItem.truncateStuffedItems(ConduitItem.java:914)