[22:24:58] [Server thread/ERROR]: A TileEntity TileEntityCarpentersBlock(com.carpentersblocks.tileentity.TEBase) has thrown an exception during loading, its state cannot be restored. Report this to the mod author
java.lang.NullPointerException
at com.carpentersblocks.tileentity.TEBase.func_145839_a(TEBase.java:71) ~[TEBase.class:?]
at net.minecraft.tileentity.TileEntity.func_145827_c(TileEntity.java:124) [aor.class:?]
at net.minecraft.world.chunk.storage.AnvilChunkLoader.loadEntities(AnvilChunkLoader.java:525) [aqk.class:?]
at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:44) [ChunkIOProvider.class:1.7.10-1420.104]
at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:15) [ChunkIOProvider.class:1.7.10-1420.104]
at net.minecraftforge.common.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:344) [AsynchronousExecutor.class:1.7.10-1420.104]
at net.minecraftforge.common.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:302) [AsynchronousExecutor.class:1.7.10-1420.104]
at net.minecraftforge.common.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:12) [ChunkIOExecutor.class:1.7.10-1420.104]
at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:169) [ms.class:?]
at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:141) [ms.class:?]
at net.minecraft.world.gen.ChunkProviderServer.func_73154_d(ChunkProviderServer.java:268) [ms.class:?]
at net.minecraft.world.World.func_72964_e(World.java:751) [ahb.class:?]
at net.minecraft.world.World.func_147438_o(World.java:3120) [ahb.class:?]
at mods.railcraft.common.util.misc.ChunkManager.ticketsLoaded(ChunkManager.java:171) [ChunkManager.class:?]
at net.minecraftforge.common.ForgeChunkManager.loadWorld(ForgeChunkManager.java:523) [ForgeChunkManager.class:1.7.10-1420.104]
at net.minecraftforge.common.ForgeInternalHandler.onDimensionLoad(ForgeInternalHandler.java:64) [ForgeInternalHandler.class:1.7.10-1420.104]
at cpw.mods.fml.common.eventhandler.ASMEventHandler_2_ForgeInternalHandler_onDimensionLoad_Load.invoke(.dynamic) [?:1.7.10-1420.104]
at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54) [ASMEventHandler.class:1.7.10-1420.104]
at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:138) [EventBus.class:1.7.10-1420.104]
at net.minecraft.server.MinecraftServer.func_71247_a(MinecraftServer.java:442) [MinecraftServer.class:?]
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:336) [lt.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:631) [MinecraftServer.class:?]
at java.lang.Thread.run(Thread.java:745) [?:1.7.0_80]

It looks to be an unusual circumstance that caused this crash. If the error line is correct then the NBT wasn't able to save properly, perhaps due to a crash.