Error with Server [java.lang.NullPointerException]

[QuantumPhoenix]

Well, I received another error today on my server, I am using MCPC+ #251, and all of the other server files. I am able to log on successfully, but whenever my friend gets on, he crashes, and so does the server. This is the report:

---- Minecraft Crash Report ----
// Oops.

Time: 3/30/14 10:10 AM
Description: Exception in server tick loop

java.lang.NullPointerException
at co.uk.flansmods.common.teams.TeamsManager.tick(TeamsManager.java:136)
at co.uk.flansmods.common.CommonTickHandler.sTick(CommonTickHandler.java:32)
at co.uk.flansmods.common.CommonTickHandler.tickEnd(CommonTickHandler.java:25)
at cpw.mods.fml.common.SingleIntervalHandler.tickEnd(SingleIntervalHandler.java:34)
at cpw.mods.fml.common.FMLCommonHandler.tickEnd(FMLCommonHandler.java:141)
at cpw.mods.fml.common.FMLCommonHandler.onPostServerTick(FMLCommonHandler.java:274)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:813)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:659)
at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)
 

It seems like it has something to do with teams in flans mod, but I can't be sure. Is it the MCPC+ Build? Or is it a Bug with flans mod?
He also disconnects with the message "Internal Server Error" Which I have encountered before while trying to run Galacticraft and MCPC+ a while back. Is there a fix for This?

Because I don't crash, it just seems to be with him. I can log on just fine.

Help would be appreciated, 

 

Thanks, Quantum.

 

[Loader]

Turn teams off on the server with the command;

/teams off

then let us know how that goes.

 

Edit: FYI that seems to be caused by a bug in Flans Mod teams.

Edited March 30, 2014 by Loader

[QuantumPhoenix]

No, it still said the same thing.. thanks though

[heres_no_escape]

---- Minecraft Crash Report ----
// Oops.

Time: 3/30/14 10:10 AM
Description: Exception in server tick loop

java.lang.NullPointerException
at co.uk.flansmods.common.teams.TeamsManager.tick(TeamsManager.java:136)
at co.uk.flansmods.common.CommonTickHandler.sTick(CommonTickHandler.java:32)
at co.uk.flansmods.common.CommonTickHandler.tickEnd(CommonTickHandler.java:25)
at cpw.mods.fml.common.SingleIntervalHandler.tickEnd(SingleIntervalHandler.java:34)
at cpw.mods.fml.common.FMLCommonHandler.tickEnd(FMLCommonHandler.java:141)
at cpw.mods.fml.common.FMLCommonHandler.onPostServerTick(FMLCommonHandler.java:274)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:813)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:659)
at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)

[QuantumPhoenix]

Could it maybe be the world itself?

[Loader]

In a way I suppose, it could be an item or block in the world but it's definitely flans - try removing the modern weapons mod pack (this will lose all your guns, ammo boxes and things like that) temporarily just in case one of those items has got associated with a team (the only part of flans that actually uses the teams API is part of that same modern weapons pack) and see if that helps.

 

If it works, you can put it back again, but make sure you turn teams off.

 

From what's available with flans source I can't see anything that could cause this, it's pretty well written.  There's a lot of places that transferring team info around clients could perhaps go wrong, so that's my best guess for where it's happening.