Solved server keeps crashing [SEVERE] java.lang.NullPointerException

I keep getting this error on my server. I have tried everything and have been searching the web for a solution but can not find anything. I have tried reinstalling craftbukkit, completely deleting my worlds and letting craftbukkit generate new ones. Running the server with no plugins and it still happens. Here is some info on my setup.

Craftbukkit build #2261 version 1.2.5-r4.1
Java version:
[root@server ~]# java -version
java version "1.7.0_05"
Java(TM) SE Runtime Environment (build 1.7.0_05-b06)
Java HotSpot(TM) 64-Bit Server VM (build 23.1-b03, mixed mode)

Here is the error in my server log

Code:

2012-07-26 15:15:20 [SEVERE] java.lang.NullPointerException
2012-07-26 15:15:20 [SEVERE]    at net.minecraft.server.NextTickListEntry.compareTo(SourceFile:3)
2012-07-26 15:15:20 [SEVERE]    at java.util.TreeMap.cmp(TreeMap.java:1911)
2012-07-26 15:15:20 [SEVERE]    at java.util.TreeMap.remove(TreeMap.java:2344)
2012-07-26 15:15:20 [SEVERE]    at java.util.TreeSet.remove(TreeSet.java:276)
2012-07-26 15:15:20 [SEVERE]    at net.minecraft.server.World.a(World.java:2399)
2012-07-26 15:15:20 [SEVERE]    at net.minecraft.server.World.doTick(World.java:1755)
2012-07-26 15:15:20 [SEVERE]    at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:554)
2012-07-26 15:15:20 [SEVERE]    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:459)
2012-07-26 15:15:20 [SEVERE]    at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)2012-07-26 15:15:20
[SEVERE] Unexpected exception
java.lang.NullPointerException
        at net.minecraft.server.NextTickListEntry.compareTo(SourceFile:3)
        at java.util.TreeMap.cmp(TreeMap.java:1911)
        at java.util.TreeMap.remove(TreeMap.java:2344)
        at java.util.TreeSet.remove(TreeSet.java:276)
        at net.minecraft.server.World.a(World.java:2399)
        at net.minecraft.server.World.doTick(World.java:1755)
        at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:554)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:459)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
2012-07-26 15:16:05 [INFO] CONSOLE: Stopping the server..^[[m
2012-07-26 15:16:05 [INFO] Stopping server

any help would be awesome, my server keeps crashing and I can not make any progress
also if you need anymore information just ask

 

only thing I know about "java.lang.NullPointerException" is that something is missing or cannot be loaded. but I cant help you much

 

The error that annoys everyone!
I wish I knew how to fix it myself, just in-case it happened to my server.

 

Code:

16:11:42 [SEVERE] java.lang.IllegalStateException: TickNextTick list out of synch
16:11:42 [SEVERE]       at net.minecraft.server.World.a(World.java:2379)
16:11:42 [SEVERE]       at net.minecraft.server.World.doTick(World.java:1754)
16:11:42 [SEVERE]       at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:546)
16:11:42 [SEVERE]       at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:451)
16:11:42 [SEVERE]       at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
16:11:42 [SEVERE] Unexpected exception
java.lang.IllegalStateException: TickNextTick list out of synch
        at net.minecraft.server.World.a(World.java:2379)
        at net.minecraft.server.World.doTick(World.java:1754)
        at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:546)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:451)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

I just got this error alittle bit ago

 

How much ram do you have? Also, try downgrading craftbukkit to R3.0

 

here is the server i rent

Code:

Phenom II 955 Quad Core
128GB SSD
8GB DDR3 RAM
CentOS 6.0 64bit

I allocated 6 GB to java for craftbukkit

edit - will I be able to use my updated plugins with a downgraded CB?

can nobody help me

Not sure if this helps or not but would anyone know what this is?

Code:

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00007fdac93e3962, pid=12676, tid=140577278502656
#
# JRE version: 7.0_05-b06
# Java VM: Java HotSpot(TM) 64-Bit Server VM (23.1-b03 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# J  net.minecraft.server.PathfinderGoal.b()Z
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.sun.com/bugreport/crash.jsp
#

this is the java error it reports, and I really don't know what "ulimit -c unlimited" does.

lol ok not getting many responses here, but I changed to craftbukkit #2222 version 1.2.5-r4.0 and uninstalled sun java jdk 1.7 and installed sun java jdk 1.6 and then this happens...

Code:

2012-07-26 20:04:45 [INFO] Starting minecraft server version 1.2.5
2012-07-26 20:04:45 [INFO] Loading properties
2012-07-26 20:04:45 [INFO] Starting Minecraft server on *:25565
2012-07-26 20:04:45 [INFO] This server is running CraftBukkit version git-Bukkit-1.2.5-R4.0-b2222jnks (MC: 1.2.5) (Implementing API version 1.2.5-R4.0)
2012-07-26 20:04:45 [INFO] [dynmap] Loading dynmap v0.40-1180
2012-07-26 20:04:45 [INFO] Preparing level "world"
2012-07-26 20:04:45 [INFO] Default game type: 0
2012-07-26 20:04:45 [INFO] Preparing start region for level 0 (Seed: 2182816516339429838)
2012-07-26 20:04:46 [INFO] Preparing start region for level 1 (Seed: 2182816516339429838)
2012-07-26 20:04:46 [INFO] Preparing start region for level 2 (Seed: 2182816516339429838)
2012-07-26 20:04:46 [INFO] Preparing spawn area: 12%
2012-07-26 20:04:47 [INFO] [dynmap] Enabling dynmap v0.40-1180
2012-07-26 20:04:47 [INFO] [dynmap] Using Bukkit Permissions (superperms) for access control
2012-07-26 20:04:47 [INFO] [dynmap] Web interface permissions only available for online users
2012-07-26 20:04:47 [INFO] [dynmap] Loaded 20 shaders.
2012-07-26 20:04:47 [INFO] [dynmap] Loaded 82 perspectives.
2012-07-26 20:04:47 [INFO] [dynmap] Loaded 12 lightings.
2012-07-26 20:04:48 [INFO] [dynmap] Web server started on address 0.0.0.0:8123
2012-07-26 20:04:48 [INFO] [dynmap] version 0.40-1180 is enabled - core version 0.40-272
2012-07-26 20:04:48 [INFO] [dynmap] Loaded 3 maps of world 'world'.
2012-07-26 20:04:48 [INFO] [dynmap] Loaded 2 maps of world 'world_nether'.
2012-07-26 20:04:48 [INFO] [dynmap] Loaded 2 maps of world 'world_the_end'.
2012-07-26 20:04:48 [INFO] [dynmap] Enabled
2012-07-26 20:04:48 [INFO] Server permissions file permissions.yml is empty, ignoring it
2012-07-26 20:04:48 [INFO] Done (2.440s)! For help, type "help" or "?"
2012-07-26 20:05:24 [INFO] mmorton89 [/24.210.63.1:60760] logged in with entity id 272 at ([world] 1961.5841117855325, 79.15549401555823, 640.3377607544041)
2012-07-26 20:20:55 [INFO] 56, -23
2012-07-26 20:22:24 [INFO] -52, -22
2012-07-26 20:22:33 [INFO] Stopping server
2012-07-26 20:22:33 [INFO] [dynmap] Disabling dynmap v0.40-1180

Here is another java error that caused my server to crash.

Code:

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGILL (0x4) at pc=0x00007f584d6b8888, pid=15332, tid=140017086727936
#
# JRE version: 6.0_33-b04
# Java VM: Java HotSpot(TM) 64-Bit Server VM (20.8-b03 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# J  net.minecraft.server.WorldGenBigTree.a([I[II)V
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
#

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

So I have been flying around on my server rendering the map for a couple hours now and it has been handling it very well without a single crash. So I assume that either downgrading bukkit to the stable build and/or downgrading to sun jdk 1.6 has solved this issue

thanks for all the help

 

Glad you resolved your issue. Its probably because a couple of your Plug-Ins aren't updated for RF.4, but if there active they will be soon.

 

Jre 6 solved issue. Sometimes jre7 screws up mine craft and craftbukkit set to solved in thread tools

 

I wasn't running any plugins like the OP suggests.