Hello, i've been using Forge's server to test out a mod with some of my friends. We started the server, all good, we played for about an hour or so and then CRASHED. It would then launch and crash after a few seconds.. Here is the crash report:

---- Minecraft Crash Report ----

// This doesn't make any sense!

 

Time: 29/8/2015 2:21 μμ

Description: Exception in server tick loop

 

java.lang.NullPointerException: Exception in server tick loop

at net.minecraft.world.WorldServer.func_180497_b(WorldServer.java:545)

at net.minecraft.world.chunk.storage.AnvilChunkLoader.loadEntities(AnvilChunkLoader.java:545)

at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:41)

at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:12)

at net.minecraftforge.common.util.AsynchronousExecutor$Task.finish(AsynchronousExecutor.java:189)

at net.minecraftforge.common.util.AsynchronousExecutor.finishActive(AsynchronousExecutor.java:354)

at net.minecraftforge.common.chunkio.ChunkIOExecutor.tick(ChunkIOExecutor.java:30)

at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:666)

at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:364)

at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:598)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:478)

at java.lang.Thread.run(Unknown Source)

 

 

A detailed walkthrough of the error, its code path and all known details is as follows:

---------------------------------------------------------------------------------------

 

-- System Details --

Details:

Minecraft Version: 1.8

Operating System: Windows 7 (x86) version 6.1

Java Version: 1.8.0_45, Oracle Corporation

Java VM Version: Java HotSpot Client VM (mixed mode), Oracle Corporation

Memory: 122947032 bytes (117 MB) / 259522560 bytes (247 MB) up to 259522560 bytes (247 MB)

JVM Flags: 0 total;

IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95

FML: MCP v9.10 FML v8.0.99.99 Minecraft Forge 11.14.3.1506 4 mods loaded, 4 mods active

States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

UCHIJAAAA mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)

UCHIJAAAA FML{8.0.99.99} [Forge Mod Loader] (forge-1.8-11.14.3.1506-universal.jar)

UCHIJAAAA Forge{11.14.3.1506} [Minecraft Forge] (forge-1.8-11.14.3.1506-universal.jar)

UCHIJAAAA SendamMod{1.0.1} [sendamMod] (Demacia.zip)

Loaded coremods (and transformers):

Profiler Position: N/A (disabled)

Player Count: 1 / 20; [EntityPlayerMP['assasinsalex88'/158, l='world', x=368,35, y=61,94, z=62,94]]

Is Modded: Definitely; Server brand changed to 'fml,forge'

Type: Dedicated Server (map_server.txt)

Well I'm not sure what the issue is but it is most likely with the only mod installed "SendamMod" I've never heard of this mod before (You may be making it yourself?), The first problem I notice with it is that it is a ZIP, I'm not sure how many problems (if any) this may cause but mods should be a jar file. Try backing up your world, removing the mod, testing the server out without the mod. If the issue stops it is probably your mod, however I don't see where it comes into play in the crash report, so can't tell you why it happens.