[16:06:21] [Server thread/ERROR]: A TileEntity Blast Furnace(ic2.core.block.machine.tileentity.TileEntityBlastFurnace) has thrown an exception during loading, its state cannot be restored. Report this to the mod author
java.lang.NullPointerException
	at ic2.core.block.comp.Redstone.update(Redstone.java:27) ~[Redstone.class:?]
	at ic2.core.block.comp.Redstone.setRedstoneModifier(Redstone.java:48) ~[Redstone.class:?]
	at ic2.core.block.invslot.InvSlotUpgrade.onChanged(InvSlotUpgrade.java:71) ~[InvSlotUpgrade.class:?]
	at ic2.core.block.invslot.InvSlot.put(InvSlot.java:121) ~[InvSlot.class:?]
	at ic2.core.block.invslot.InvSlot.readFromNbt(InvSlot.java:80) ~[InvSlot.class:?]
	at ic2.core.block.TileEntityInventory.func_145839_a(TileEntityInventory.java:57) ~[TileEntityInventory.class:?]
	at ic2.core.block.machine.tileentity.TileEntityBlastFurnace.func_145839_a(TileEntityBlastFurnace.java:60) ~[TileEntityBlastFurnace.class:?]
	at net.minecraft.tileentity.TileEntity.func_145827_c(TileEntity.java:116) [aor.class:?]
	at net.minecraft.world.chunk.storage.AnvilChunkLoader.loadEntities(AnvilChunkLoader.java:496) [aqk.class:?]
	at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:41) [ChunkIOProvider.class:?]
	at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:12) [ChunkIOProvider.class:?]
	at net.minecraftforge.common.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:344) [AsynchronousExecutor.class:?]
	at net.minecraftforge.common.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:302) [AsynchronousExecutor.class:?]
	at net.minecraftforge.common.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:12) [ChunkIOExecutor.class:?]
	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:126) [ms.class:?]
	at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:101) [ms.class:?]
	at net.minecraft.server.MinecraftServer.func_71222_d(MinecraftServer.java:265) [MinecraftServer.class:?]
	at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:130) [bsx.class:?]
	at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:153) [bsx.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [?:?]