[21:35:53] [Server thread/ERROR]: Encountered an unexpected exception
java.lang.NoClassDefFoundError: net/minecraft/entity/Entity$1
	at net.minecraft.entity.Entity.func_85029_a(Entity.java:2553) ~[sa.class:?]
	at net.minecraft.entity.Entity.func_70020_e(Entity.java:1739) ~[sa.class:?]
	at net.minecraft.entity.EntityList.func_75615_a(EntityList.java:172) ~[sg.class:?]
	at net.minecraft.world.chunk.storage.AnvilChunkLoader.loadEntities(AnvilChunkLoader.java:487) ~[aqk.class:?]
	at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:44) ~[ChunkIOProvider.class:git-Cauldron-MCPC-Plus-1.7.10-1.1207.01.198]
	at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:15) ~[ChunkIOProvider.class:git-Cauldron-MCPC-Plus-1.7.10-1.1207.01.198]
	at net.minecraftforge.common.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:344) ~[AsynchronousExecutor.class:git-Cauldron-MCPC-Plus-1.7.10-1.1207.01.198]
	at net.minecraftforge.common.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:302) ~[AsynchronousExecutor.class:git-Cauldron-MCPC-Plus-1.7.10-1.1207.01.198]
	at net.minecraftforge.common.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:12) ~[ChunkIOExecutor.class:git-Cauldron-MCPC-Plus-1.7.10-1.1207.01.198]
	at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:164) ~[ms.class:?]
	at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:137) ~[ms.class:?]
	at net.minecraft.server.MinecraftServer.func_71222_d(MinecraftServer.java:469) ~[MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.func_71247_a(MinecraftServer.java:434) ~[MinecraftServer.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:329) ~[lt.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:620) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.7.0_79]
[21:35:53] [Server thread/ERROR]: This crash report has been saved to: /home/minecraft/servers/Principal_PowerGame/./crash-reports/crash-2015-12-17_21.35.53-server.txt
[21:35:53] [Server thread/INFO]: Applying holder lookups
[21:35:53] [Server thread/INFO]: Holder lookups applied
[21:35:53] [Server thread/INFO]: The state engine was in incorrect state SERVER_