I kept going at this for a good 2 hours now. I have tried everything including re-downloading the mod, re-installing the server and taking out mod by mod and plugging them back in to see what is the trouble.  I ran this on 1.7.10 and its getting annoying. Here is my crash report, I run it from a hosted server with forge running.

 

---- Minecraft Crash Report ----

// Hey, that tickles! Hehehe!

 

Time: 3/20/15 11:09 PM

Description: Exception in server tick loop

 

cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: thehippomaster/MutantCreatures/MutantSkeleton

at cpw.mods.fml.common.LoadController.transition(LoadController.java:162)

at cpw.mods.fml.common.Loader.preinitializeMods(Loader.java:515)

at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:88)

at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:314)

at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:117)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387)

at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)

Caused by: java.lang.NoClassDefFoundError: thehippomaster/MutantCreatures/MutantSkeleton

at thehippomaster.MutantCreatures.item.ChemicalX.<clinit>(ChemicalX.java:83)

at thehippomaster.MutantCreatures.MutantCreatures.preInit(MutantCreatures.java:89)

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 cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:513)

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.EventSubscriber.handleEvent(EventSubscriber.java:74)

at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)

at com.google.common.eventbus.EventBus.post(EventBus.java:275)

at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:208)

at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:187)

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.EventSubscriber.handleEvent(EventSubscriber.java:74)

at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)

at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)

at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)

at com.google.common.eventbus.EventBus.post(EventBus.java:275)

at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:118)

at cpw.mods.fml.common.Loader.preinitializeMods(Loader.java:513)

... 5 more

Caused by: java.lang.ClassNotFoundException: thehippomaster.MutantCreatures.MutantSkeleton

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)

at java.lang.ClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

... 34 more

Caused by: java.lang.NoClassDefFoundError: thehippomaster/AnimationAPI/IAnimatedEntity

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClass(Unknown Source)

at java.security.SecureClassLoader.defineClass(Unknown Source)

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)

... 36 more

Caused by: java.lang.ClassNotFoundException: thehippomaster.AnimationAPI.IAnimatedEntity

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)

at java.lang.ClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

... 40 more

Caused by: java.lang.NullPointerException

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)

... 42 more

 

 

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

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

 

-- System Details --

Details:

Minecraft Version: 1.7.10

Operating System: Windows 7 (x86) version 6.1

Java Version: 1.8.0_25, Oracle Corporation

Java VM Version: Java HotSpot Client VM (mixed mode), Oracle Corporation

Memory: 38974304 bytes (37 MB) / 97001472 bytes (92 MB) up to 259522560 bytes (247 MB)

JVM Flags: 0 total;

AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used

IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0

FML: MCP v9.05 FML v7.10.85.1230 Minecraft Forge 10.13.2.1230 5 mods loaded, 5 mods active

mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized

FML{7.10.85.1230} [Forge Mod Loader] (forge-1.7.10-10.13.2.1230-universal.jar) Unloaded->Constructed->Pre-initialized

Forge{10.13.2.1230} [Minecraft Forge] (forge-1.7.10-10.13.2.1230-universal.jar) Unloaded->Constructed->Pre-initialized

lucky{5.1.0} [Lucky Block] ([1-7-10]_Lucky_Block_v5-1-0.jar) Unloaded->Constructed->Pre-initialized

MutantCreatures{1.4.8} [Mutant Creatures] (MutantCreatures-1.7.10-1.4.8 (1).jar) Unloaded->Constructed->Errored

Profiler Position: N/A (disabled)

Is Modded: Definitely; Server brand changed to 'fml,forge'

Type: Dedicated Server (map_server.txt)

Umm... No offence but you shouldn't have a crash report pasted directly into the forum. Try putting [nobbc]

[/nobbc] around the server crash report. It will look better.

 

As to why this crashed, I don't know. Contact the mod's creator to see what the problem is.

diesieben07 Animation API is getting bad... who makes it?

We should teach them about the @API annotation and these damn modders how to use dependencies correctly.

A "Missing Mod ANIMATIONAPI" would be far better then these damn crashes.