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

Minecraft has stopped running because it encountered a problem; Exception in server tick loop

A full error report has been saved to C:\Documents and Settings\PARTICULAR\Dados de aplicativos\.minecraft\crash-reports\crash-2013-02-14_17.50.53-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 ddbc4c76 --------
Full report at:
C:\Documents and Settings\PARTICULAR\Dados de aplicativos\.minecraft\crash-reports\crash-2013-02-14_17.50.53-server.txt
Please show that file to Mojang, NOT just this screen!

Generated 14/02/13 17:51

– System Details –
Details:
Minecraft Version: 1.4.7
Operating System: Windows XP (x86) version 5.1
Java Version: 1.7.0_13, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 860569384 bytes (820 MB) / 1037959168 bytes (989 MB) up to 1037959168 bytes (989 MB)
JVM Flags: 2 total; -Xms1024m -Xmx1024m
AABB Pool Size: 29632 (1659392 bytes; 1 MB) allocated, 29632 (1659392 bytes; 1 MB) used
Suspicious classes: No suspicious classes found.
IntCache: cache: 0, tcache: 2, allocated: 5, tallocated: 59
Profiler Position: N/A (disabled)
Vec3 Pool Size: 4034 (225904 bytes; 0 MB) allocated, 4034 (225904 bytes; 0 MB) used
Player Count: 0 / 8; []
Type: Integrated Server (map_client.txt)
Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.

java.lang.NullPointerException
at cf.b(SourceFile:103)
at cf.a(SourceFile:35)
at iv.b(SourceFile:436)
at gm.a(SourceFile:72)
at bec.b(SourceFile:73)
at net.minecraft.server.MinecraftServer.r(SourceFile:762)
at net.minecraft.server.MinecraftServer.q(SourceFile:679)
at bdz.q(SourceFile:117)
at net.minecraft.server.MinecraftServer.run(SourceFile:613)
at fy.run(SourceFile:849)
— END ERROR REPORT 55f3b921 ----------