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I installed several mods, first being MCA, then Jammys furniture, then sophisticated wolves, TMI, craft guide and finally Mo creatures. Mo creatures was the most difficult. I would remove it, Minecraft would work, put it back in, it would crash. Oh, I also have Paper cut out as a texture pack. When I finally installed Mo creatures, it loaded fine then got a crash:


---- Minecraft Crash Report ----
// My bad.

Time: 4/29/13 9:40 PM
Description: Exception in server tick loop

java.lang.NoSuchMethodError: drzhark.customspawner.CustomSpawner.getCustomBiomeSpawnList(Lnet/minecraft/world/biome/BiomeGenBase;)Ljava/util/List;
at drzhark.mocreatures.MoCEventHooks.peformCustomWorldGenSpawning(MoCEventHooks.java:16)
at net.minecraftforge.event.ASMEventHandler_5_MoCEventHooks_peformCustomWorldGenSpawning_Populate.invoke(.dynamic)
at net.minecraftforge.event.ASMEventHandler.invoke(ASMEventHandler.java:35)
at net.minecraftforge.event.EventBus.post(EventBus.java:103)
at net.minecraftforge.event.terraingen.TerrainGen.populate(TerrainGen.java:36)
at net.minecraft.world.gen.ChunkProviderGenerate.func_73153_a(ChunkProviderGenerate.java:542)
at net.minecraft.world.gen.ChunkProviderServer.func_73153_a(ChunkProviderServer.java:258)
at net.minecraft.world.chunk.Chunk.func_76624_a(Chunk.java:1258)
at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:153)
at net.minecraft.server.MinecraftServer.func_71222_d(MinecraftServer.java:281)
at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:88)
at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:105)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:429)
at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
Minecraft Version: 1.5.1
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.6.0_17, Sun Microsystems Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
Memory: 426350664 bytes (406 MB) / 676855808 bytes (645 MB) up to 954466304 bytes (910 MB)
JVM Flags: 2 total; -Xms512m -Xmx1024m
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
FML: MCP v7.44 FML v5.1.3.605 Minecraft Forge 7.7.0.605 11 mods loaded, 11 mods active
mcp [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
mod_TooManyItems [mod_TooManyItems] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
GuiAPI [GuiAPI] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
jammyfurniture [Jammy Furniture Mod] (1.5.1_Jammy_Furniture_Mod_V4.3.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
craftguide [CraftGuide] (CraftGuide-1.6.7.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
CustomSpawner [DrZhark's CustomSpawner] (CustomMobSpawner 1.12.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
MoCreatures [DrZhark's Mo'Creatures Mod] (DrZhark's Mo'Creatures Mod v5.1.5.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
MCA [Minecraft Comes Alive] (mca v3.3.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
mod_sophwolves [mod_sophwolves] (sophwolves2.1.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Player Count: 0 / 8; []
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'forge,fml'

I then removed Mo creatures cause I figured that was the problem, but as soon as i logged in, it stated that it was missing the Mo creatures mod so I put it back. Help, I'm so new to this and my daughter wants this mod so bad.

Thanks for any help.

Well, everything looks fine with your specifications, also the mods seem to be updated, so please check that your forge is correctly installed inside .minecraft and that it is the lastest recommended build, if it does not work, try erasing your coremods folder in .minecraft.

I'm very interested in hearing whether or not this was solved - just ran into the same issue on my server.

I copied the forge to minecraft jar folder and it let me go all the way to choosing single player but it just stays at loading snd does not respond to anything. I need to mention, it does let her go into her multiplayer but not single player. Why is that? Oh and the core mod folder is empty.

Thanks Monito55 for the help, please....anymore ideas?