Crashes appon finishing "mojang"

[Coach]

Launcher Version: 1.0.1.3

Operating System: Windows 64 bit

Java Version: Java 7 64bit

Antivirus Program: N/A

Description of Problem:

Well The best I can describe it is in the Dev build or 7.10 aka 1.2.5 technic version I was mainly playing technicSSP on a normal map the next thing I know O get a "saving chunks" error and crashes, I start up technic launcher with 1.2.5 dev build and it loads properly and with the "Mojang" sign and after some time (in seconds) it instantly crashes. I've tried reinstalling it doesn't fix the problem. And I don't know if it is my java type or some of the mods causing it to crash on loading screen. (The error log is the best I could find and get.)

Error Messages:

Error Log:

42 mods loaded

Minecraft Forge 3.3.7.135

FML v2.2.48.135

Forge Mod Loader version 2.2.48.135 for Minecraft 1.2.5

	mod_CodeChickenCore : Initialized (CodeChickenCore-Client 0.5.3.zip)

	mod_MinecraftForge : Initialized (modpack.jar)

	mod_NotEnoughItems : Initialized (modpack.jar)

	mod_Somnia : Initialized (modpack.jar)

	mod_Somnia : Initialized ([1.2.5] Somnia v24.zip)

	mod_ReiMinimap : Initialized ([1.2.5]ReiMinimap_v3.2_03.zip)

	mod_IC2 : Initialized (industrialcraft-2-client_1.97.jar)

	mod_IC2AdvancedMachines : Initialized (AdvancedMachines_4.1_client.zip)

	mod_AdditionalBuildcraftObjects : Initialized (buildcraft-C-additionalbuildcraftobjects-latest.zip)

	mod_BuildCraftCore : Initialized (buildcraft-client-A-core-3.1.5.zip)

	mod_BuildCraftBuilders : Initialized (buildcraft-client-B-builders-3.1.5.zip)

	mod_BuildCraftEnergy : Initialized (buildcraft-client-B-energy-3.1.5.zip)

	mod_BuildCraftFactory : Initialized (buildcraft-client-B-factory-3.1.5.zip)

	mod_BuildCraftTransport : Initialized (buildcraft-client-B-transport-3.1.5.zip)

	mod_BuildCraftSilicon : Initialized (buildcraft-client-C-silicon-3.1.5.zip)

	mod_AdditionalPipes : Initialized (buildcraft-client-DA-additionalpipes-3.1.0.zip)

	mod_crystalWing : Initialized (Crystal Wing 1.2.5.a.zip)

	mod_mocreatures : Pre-initialized (DrZharks MoCreatures Mod v3.6.2.zip)

	mod_EnderStorage : Pre-initialized (EnderStorage-Client 1.1.3.zip)

	mod_IC2NuclearControl : Pre-initialized (IC2NuclearControl_client_v1.1.9b.zip)

	mod_ImmibisCore : Pre-initialized (immibis-core_49.0.7_for_1.2.5-client.jar)

	mod_InvTweaks : Pre-initialized (InvTweaks-1.41b-1.2.4.zip)

	mod_LogisticsPipes : Pre-initialized (LogisticsPipes-BC3-0.2.5B.zip)

	mod_MAtmos_forModLoader : Pre-initialized (MAtmos_packaged.zip)

	mod_CompactSolars : Pre-initialized (mod_compactsolars-client-2.3.2.10.zip)

	mod_IronChest : Pre-initialized (mod_ironchests-client-3.4.2.28.zip)

	mod_RedPowerCore : Pre-initialized (RedPowerCore-2.0pr5b2.zip)

	mod_NetherOres : Pre-initialized (NetherOres_Client_1.2.1.zip)

	mod_Railcraft : Pre-initialized (Railcraft_Client_5.3.2.zip)

	mod_RedPowerControl : Pre-initialized (RedPowerControl-2.0pr5b2.zip)

	mod_RedPowerLighting : Pre-initialized (RedPowerLighting-2.0pr5b2.zip)

	mod_RedPowerLogic : Pre-initialized (RedPowerLogic-2.0pr5b2.zip)

	mod_RedPowerMachine : Pre-initialized (RedPowerMachine-2.0pr5b2.zip)

	mod_RedPowerWiring : Pre-initialized (RedPowerWiring-2.0pr5b2.zip)

	mod_RedPowerWorld : Pre-initialized (RedPowerWorld-2.0pr5b2.zip)

	mod_treecapitator : Pre-initialized (Treecapitator 1.2.5.e.zip)

	mod_TubeStuff : Pre-initialized (tubestuff_49.0.7_for_1.2.5-client.jar)

	Balkon's WeaponMod : Pre-initialized (WeaponMod.zip)

	mod_WirelessRedstoneCore : Pre-initialized (WR-CBE Core-Client 1.2.2.1.zip)

	mod_WirelessRedstoneAddons : Pre-initialized (WR-CBE Addons-Client 1.2.2.2.zip)

	mod_WirelessRedstoneRedPower : Pre-initialized (WR-CBE RedPower-Client 1.2.2.1.zip)

	mod_ThaumCraft : Pre-initialized (ThaumCraft2.1.6c.zip)





      Minecraft has crashed!      

      ----------------------      



Minecraft has stopped running because it encountered a problem.









--- BEGIN ERROR REPORT b42eca48 --------

Generated 7/18/12 8:10 AM



Minecraft: Minecraft 1.2.5

OS: Windows 7 (amd64) version 6.1

Java: 1.6.0_29, Sun Microsystems Inc.

VM: Java HotSpot 64-Bit Server VM (mixed mode), Sun Microsystems Inc.

LWJGL: 2.4.2

OpenGL: ATI Radeon HD 5700 Series  version 4.0.10317 Compatibility Profile Context, ATI Technologies Inc.



java.util.ConcurrentModificationException

	at java.util.AbstractList$Itr.checkForComodification(Unknown Source)

	at java.util.AbstractList$Itr.next(Unknown Source)

	at java.util.Collections$UnmodifiableCollection$1.next(Unknown Source)

	at ClientRegistry.removeSpawn(ClientRegistry.java:136)

	at cpw.mods.fml.common.registry.FMLRegistry.removeSpawn(FMLRegistry.java:102)

	at ModLoader.removeSpawn(ModLoader.java:621)

	at mod_mocreatures.ClearVanillaSpawnLists(mod_mocreatures.java:1691)

	at mod_mocreatures.updateSettings(mod_mocreatures.java:561)

	at mod_mocreatures.load(mod_mocreatures.java:320)

	at cpw.mods.fml.common.modloader.ModLoaderModContainer.init(ModLoaderModContainer.java:324)

	at cpw.mods.fml.common.Loader.modInit(Loader.java:263)

	at cpw.mods.fml.common.Loader.initializeMods(Loader.java:604)

	at cpw.mods.fml.client.FMLClientHandler.onLoadComplete(FMLClientHandler.java:203)

	at net.minecraft.client.Minecraft.a(Minecraft.java:426)

	at net.minecraft.client.Minecraft.run(Minecraft.java:735)

	at java.lang.Thread.run(Unknown Source)

--- END ERROR REPORT 2de4a152 ----------

[Torezu]

You tried to change the Mo' Creatures properties in game, didn't you? Read this thread.