Server thread/ERROR [FML]: A TileEntity type buildcraft.transport.TileGenericPipe has throw an exception trying to write state. It will not persist. Report this to the mod author
14.02 07:00:21 [Server] INFO java.lang.IllegalArgumentException: Empty string not allowed
14.02 07:00:21 [Server] INFO at net.minecraft.nbt.NBTTagString.(NBTTagString.java:22) ~[ea.class:?]
14.02 07:00:21 [Server] INFO at net.minecraft.nbt.NBTTagCompound.func_74778_a(NBTTagCompound.java:104) ~[dn.class:?]
14.02 07:00:21 [Server] INFO at buildcraft.transport.TileGenericPipe.func_145841_b(TileGenericPipe.java:266) ~[TileGenericPipe.class:?]