CRASH GLITCH WITH Craftbukkit.jarR30

2012-12-02 21:51:30 [SEVERE] net.minecraft.server.ReportedException: Exception ticking world entities
2012-12-02 21:51:30 [SEVERE]at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:581)
2012-12-02 21:51:30 [SEVERE]at net.minecraft.server.DedicatedServer.r(DedicatedServer.java:222)
2012-12-02 21:51:30 [SEVERE]at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:493)
2012-12-02 21:51:30 [SEVERE]at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:426)
2012-12-02 21:51:30 [SEVERE]at net.minecraft.server.ThreadServerApplication.run(SourceFile:856)
2012-12-02 21:51:30 [SEVERE] Caused by: java.lang.NullPointerException
2012-12-02 21:51:30 [SEVERE]at net.minecraft.server.TileEntity.a(TileEntity.java:131)
2012-12-02 21:51:30 [SEVERE]at net.minecraft.server.World.tickEntities(World.java:1245)
2012-12-02 21:51:30 [SEVERE]at net.minecraft.server.WorldServer.tickEntities(WorldServer.java:444)
2012-12-02 21:51:30 [SEVERE]at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:577)
2012-12-02 21:51:30 [SEVERE]... 4 more
2012-12-02 21:51:30 [SEVERE] Encountered an unexpected exception ReportedException
net.minecraft.server.ReportedException: Exception ticking world entities
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:581)
at net.minecraft.server.DedicatedServer.r(DedicatedServer.java:222)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:493)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:426)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:856)
Caused by: java.lang.NullPointerException
at net.minecraft.server.TileEntity.a(TileEntity.java:131)
at net.minecraft.server.World.tickEntities(World.java:1245)
at net.minecraft.server.WorldServer.tickEntities(WorldServer.java:444)
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:577)
... 4 more
2012-12-02 21:51:30 [SEVERE] This crash report has been saved to: C:\McServer\.\crash-reports\crash-2012-12-02_21.51.30-server.txt
2012-12-02 22:14:35 [INFO] Connection reset
2012-12-02 22:34:26 [INFO] Connection reset
Any idea what this means?
Properties:
#Minecraft server properties
#Mon Dec 03 16:52:54 CST 2012
generator-settings=
allow-nether=false
level-name=NiceCraft
enable-query=false
allow-flight=false
server-port=25565
level-type=DEFAULT
enable-rcon=false
level-seed=2012870082934095121212
server-ip=
max-build-height=250
spawn-npcs=false
white-list=true
spawn-animals=true
snooper-enabled=false
hardcore=false
texture-pack=
online-mode=true
pvp=true
difficulty=3
server-name=NiceCraft
gamemode=0
max-players=20
spawn-monsters=true
view-distance=6
generate-structures=true
spawn-protection=16
motd=&4Welcome to Nicecraft\!
Version: Latest craftbukkit dev build

 

It means crash.
Wrong section btw, should be (I think) in Bukkit Help (If any TnT passes by this thread, it'll probably be there).
We need your server.properties, plugins list, and craftbukkit build to start with.

 

Lolmewn
Really odd, it is in Bukkit Help.

 

:O You did it again! This is getting... almost normal

 

http://forums.bukkit.org/threads/crash-glitch-with-latest-cb-dev-build.114629/

and

http://forums.bukkit.org/threads/errors.112592/

and

http://forums.bukkit.org/threads/server-crashes-dont-know-why.112584/

Seems quite common and even after fixing all the async on my server it still happens :/