Minecraft Forums

It's just this world and I get this error message:


Minecraft has crashed!
----------------------

Minecraft has stopped running because it encountered a problem; Sending packet

A full error report has been saved to C:\Users\RecRM\AppData\Roaming\.minecraft\crash-reports\crash-2013-03-19_13.52.19-server.txt - Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash



--- BEGIN ERROR REPORT ee5339eb --------
Full report at:
C:\Users\RecRM\AppData\Roaming\.minecraft\crash-reports\crash-2013-03-19_13.52.19-server.txt
Please show that file to Mojang, NOT just this screen!

Generated 3/19/13 1:52 PM

-- Head --
Stacktrace:
at ch.b(SourceFile:107)
at ch.a(SourceFile:39)

-- Packet being sent --
Details:
Packet ID: 4
Packet class: fh
Stacktrace:
at jh.b(SourceFile:430)
at gu.b(SourceFile:669)
at gu.a(SourceFile:79)
at bjd.b(SourceFile:73)
at net.minecraft.server.MinecraftServer.r(SourceFile:480)
at net.minecraft.server.MinecraftServer.q(SourceFile:397)
at bja.q(IntegratedServer.java:171)
at net.minecraft.server.MinecraftServer.run(SourceFile:331)
at gp.run(SourceFile:573)

-- System Details --
Details:
Minecraft Version: 1.5
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_09, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 471881840 bytes (450 MB) / 941420544 bytes (897 MB) up to 1037959168 bytes (989 MB)
JVM Flags: 2 total; -Xms512m -Xmx1024m
AABB Pool Size: 839462 (47009872 bytes; 44 MB) allocated, 839462 (47009872 bytes; 44 MB) used
Suspicious classes: IWrUpdater, Config, WrUpdates, ...]
IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
Profiler Position: N/A (disabled)
Vec3 Pool Size: 36995 (2071720 bytes; 1 MB) allocated, 36995 (2071720 bytes; 1 MB) used
Player Count: 0 / 8; []
Type: Integrated Server (map_client.txt)
Is Modded: Very likely; Jar signature invalidated

java.lang.NullPointerException
at ch.b(SourceFile:107)
at ch.a(SourceFile:39)
at jh.b(SourceFile:430)
at gu.b(SourceFile:669)
at gu.a(SourceFile:79)
at bjd.b(SourceFile:73)
at net.minecraft.server.MinecraftServer.r(SourceFile:480)
at net.minecraft.server.MinecraftServer.q(SourceFile:397)
at bja.q(IntegratedServer.java:171)
at net.minecraft.server.MinecraftServer.run(SourceFile:331)
at gp.run(SourceFile:573)
--- END ERROR REPORT 1bbaa36b ----------


Is this corruption? I'm currently running TMI & OptiFine