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java.lang.NullPointerException: 	at Reika.RotaryCraft.Registry.MachineRegistry.getMachine(MachineRegistry.java:493)	at Reika.RotaryCraft.TileEntities.Transmission.TileEntityClutch.transferPower(TileEntityClutch.java:49)	at Reika.RotaryCraft.TileEntities.Transmission.TileEntityClutch.transferPower(TileEntityClutch.java:100)	at Reika.RotaryCraft.TileEntities.Transmission.TileEntityClutch.updateEntity(TileEntityClutch.java:36)	at Reika.DragonAPI.Base.TileEntityBase.func_145845_h(TileEntityBase.java:465)	at net.minecraft.world.World.func_72939_s(World.java:1939)	at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:2006)	at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:973)	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:898)	at net.minecraft.client.main.Main.main(SourceFile:148)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	at java.lang.reflect.Method.invoke(Unknown Source)	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)