Please Help Me

i just switched from modload to forge (for tf2 mods) and it was working good after a hour of fixing an takeing away many mods( i use magic launcher ) an it was working perfect, untill i hit a zombie then it crashed heres the report
Minecraft has crashed!
----------------------

Minecraft has stopped running because it encountered a problem; Exception in server tick loop
This error has been saved to C:\Users\Jay\AppData\Roaming\.minecraft\crash-reports\crash-2012-09-26_06.30.02-server.txt for your convenience. Please include a copy of this file if you report this crash to anyone.



--- BEGIN ERROR REPORT 975429e4 --------
Generated 9/26/12 6:30 AM

- Minecraft Version: 1.3.2
- Operating System: Windows 7 (amd64) version 6.1
- Java Version: 1.7.0_05, Oracle Corporation
- Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
- Memory: 848094464 bytes (808 MB) / 1037959168 bytes (989 MB) up to 1037959168 bytes (989 MB)
- JVM Flags: 2 total; -Xms1024m -Xmx1024m
- Is Modded: Definitely; 'forge,fml'
- Profiler Position: N/A (disabled)
- Player Count: 1 / 8; [gu['TheBlackRose365'/268, l='Ice Dreams', x=-267.17, y=63.00, z=-244.77]]
- World Ice Dreams Entities: 0 total; []
- World Ice Dreams Players: 0 total; []
- World Ice Dreams Chunk Stats: ServerChunkCache: 0 Drop: 0
- Type: Integrated Server

java.lang.NullPointerException
at Reflector.callInt(Reflector.java:214)
at jw.d(EntityLiving.java:1030)
at jw.a(EntityLiving.java:882)
at nu.a(SourceFile:43)
at mz.k(SourceFile:264)
at ld.d(SourceFile:81)
at kw.a(SourceFile:84)
at jw.bc(EntityLiving.java:1734)
at jw.d(EntityLiving.java:1559)
at jk.d(SourceFile:42)
at mn.d(SourceFile:32)
at mz.d(SourceFile:155)
at jw.h_(EntityLiving.java:688)
at mz.h_(SourceFile:167)
at up.a(World.java:2021)
at gr.a(WorldServer.java:538)
at up.g(World.java:1986)
at up.h(World.java:1867)
at gr.h(WorldServer.java:437)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:616)
at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:547)
at axv.p(IntegratedServer.java:102)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:453)
at ep.run(SourceFile:539)
--- END ERROR REPORT c7017726 ----------


can someone please help??