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hi guys,
lately my game keeps crashed every time it renders, i keep getting this error report plz try to help me.




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\Dan\AppData\Roaming\.minecraft\crash-reports\crash-2012-10-09_13.26.30-server.txt for your convenience. Please include a copy of this file if you report this crash to anyone.



--- BEGIN ERROR REPORT 81c0e636 --------
Generated 13:26 09/10/12

- Minecraft Version: 1.3.2
- Operating System: Windows 7 (amd64) version 6.1
- Java Version: 1.7.0_07, Oracle Corporation
- Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
- Memory: 328162504 bytes (312 MB) / 638648320 bytes (609 MB) up to 954466304 bytes (910 MB)
- JVM Flags: 2 total; -Xms512m -Xmx1024m
- FML: FML v3.0.196.366 Minecraft Forge 4.1.1.251 8 mods loaded, 8 mods active
FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
mod_cars [mod_cars] (1.3.2 car mod v2.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
mod_ReiMinimap [mod_ReiMinimap] ([1.3.2]ReiMinimap_v3.2_05.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
IC2 [IndustrialCraft 2] (industrialcraft-2_1.106.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
mod_playerEnchantments [mod_playerEnchantments] (More_Enchantments_v_1_1_SP_LAN.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
mod_521_magicalRepair [mod_521_magicalRepair] (Superior_Enchanting_SP_LAN.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
mod_521_superior_enchanting [mod_521_superior_enchanting] (Superior_Enchanting_SP_LAN.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
- Is Modded: Definitely; 'forge,fml'
- Profiler Position: N/A (disabled)
- Player Count: 1 / 8; [gu['rikoroki'/206, l='SNOWWWWWWWWWWWWWWWWWWWWWWWWW', x=-402.42, y=62.40, z=-961.63]]
- World SNOWWWWWWWWWWWWWWWWWWWWWWWWW Entities: 0 total; []
- World SNOWWWWWWWWWWWWWWWWWWWWWWWWW Players: 0 total; []
- World SNOWWWWWWWWWWWWWWWWWWWWWWWWW Chunk Stats: ServerChunkCache: 0 Drop: 0
- Type: Integrated Server

java.util.ConcurrentModificationException
at java.util.ArrayList$Itr.checkForComodification(Unknown Source)
at java.util.ArrayList$Itr.next(Unknown Source)
at go.b(SourceFile:154)
at gr.b(WorldServer.java:129)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:607)
at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:547)
at axv.p(IntegratedServer.java:105)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:453)
at ep.run(SourceFile:539)
--- END ERROR REPORT 8d593e8f ----------