---- Minecraft Crash Report ----
// I bet Cylons wouldn't have this problem.

Time: 26/05/13 2:00 PM
Description: Exception in server tick loop

java.lang.NoClassDefFoundError: net/minecraft/client/gui/GuiOptions
	at java.lang.Class.getDeclaredMethods0(Native Method)
	at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
	at java.lang.Class.getDeclaredMethods(Unknown Source)
	at cpw.mods.fml.common.FMLModContainer.gatherAnnotations(FMLModContainer.java:319)
	at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:464)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
	at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
	at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)
	at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
	at com.google.common.eventbus.EventBus.post(EventBus.java:267)
	at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:165)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
	at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
	at com.google.common.eventbus.EventBus.dispatch(EventBus.java:314)
	at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
	at com.google.common.eventbus.EventBus.post(EventBus.java:267)
	at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:98)
	at cpw.mods.fml.common.Loader.loadMods(Loader.java:503)
	at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:85)
	at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:350)
	at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:69)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:430)
	at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.gui.GuiOptions
	at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:238)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	... 31 more
Caused by: java.lang.NullPointerException
	at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:227)
	... 33 more


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

-- System Details --
Details:
	Minecraft Version: 1.5.2
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_21, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 609944728 bytes (581 MB) / 648740864 bytes (618 MB) up to 3817799680 bytes (3640 MB)
	JVM Flags: 2 total; -Xmx4G -Xms512M
	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: 0, tallocated: 0
	FML: MCP v7.51 FML v5.2.12.712 Minecraft Forge 7.8.0.712 11 mods loaded, 11 mods active
	mcp{7.44} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed
	FML{5.2.12.712} [Forge Mod Loader] (coremods) Unloaded->Constructed
	Forge{7.8.0.712} [Minecraft Forge] (coremods) Unloaded->Constructed
	GuiAPI{0.15.6} [GuiAPI] (GuiAPI-0.15.6-1.5.2.jar) Unloaded
	BiblioCraft{1.2.3} [BiblioCraft] (BiblioCraft[v1.2.3].zip) Unloaded
	CustomSpawner{2.2.2} [DrZhark's CustomSpawner] (CustomMobSpawner 2.2.2.zip) Unloaded
	MoCreatures{5.2.2} [DrZhark's Mo'Creatures Mod] (DrZharks MoCreatures Mod v5.2.2.zip) Unloaded
	ExtrabiomesXL{3.13.1} [ExtrabiomesXL] (ExtrabiomesXL-universal-1.5.2-3.13.1.jar) Unloaded
	Natura{1.5.1_2.1.beta.4} [Natura] (Natura_2.1beta.4.jar) Unloaded
	TConstruct{1.5.1_1.3.dev.44} [Tinkers' Construct] (TConstruct_1.3.dev.44.jar) Unloaded
	weaponmod{1.5.2 v1.11.3} [Balkon's WeaponMod] (WeaponMod.zip) Unloaded
	Profiler Position: N/A (disabled)
	Is Modded: Definitely; Server brand changed to 'fml,forge'
	Type: Dedicated Server (map_server.txt)