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I wanted to add the hamsterific mod to my modpack but it keeps crashing saying class not found razzberri ill post the crash report but does anyone know how to fix the class not found!!! please reply asap!

---- Minecraft Crash Report ----
// Hi. I'm Minecraft, and I'm a crashaholic.

Time: 1/31/16 8:49 PM
Description: There was a severe problem during mod loading that has caused the game to fail

cpw.mods.fml.common.LoaderException: java.lang.ClassNotFoundException: es.razzleberri.hamsterrific.Hamsterrific
at cpw.mods.fml.common.LoadController.transition(LoadController.java:163)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:544)
at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:208)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:480)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:878)
at net.minecraft.client.main.Main.main(SourceFile:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: java.lang.ClassNotFoundException: es.razzleberri.hamsterrific.Hamsterrific
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at cpw.mods.fml.common.ModClassLoader.loadClass(ModClassLoader.java:58)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:440)
at sun.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
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:212)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:190)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
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:119)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:513)
... 10 more
Caused by: java.lang.NullPointerException
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
... 37 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: Mac OS X (x86_64) version 10.11.3
Java Version: 1.8.0_66, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 1641420152 bytes (1565 MB) / 2001207296 bytes (1908 MB) up to 2001207296 bytes (1908 MB)
JVM Flags: 2 total; -Xms2048m -Xmx2048m
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 v7.10.99.99 Minecraft Forge 10.13.4.1558 Optifine OptiFine_1.7.10_HD_C1 62 mods loaded, 62 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UC mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)
UC FML{7.10.99.99} [Forge Mod Loader] (modpack.jar)
UC Forge{10.13.4.1558} [Minecraft Forge] (modpack.jar)
UC CodeChickenCore{1.0.4.29} [CodeChicken Core] (minecraft.jar)
UC itemphysic{1.1.5} [ItemPhysic] (minecraft.jar)
UC ivtoolkit{IvToolkit} [1.2] (minecraft.jar)
UC FamiliarsAPI{1.7.10} [Familiars API] (FamiliarsAPI-1.7.10.jar)
UC adventurebackpack{1.7.10-0.8b} [Adventure Backpack] (adventurebackpack-1.7.10-0.8c.jar)
UC AnimationAPI{1.2.4} [AnimationAPI] (AnimationAPI-1.7.10-1.2.4.jar)
UC BiblioCraft{1.8.2} [BiblioCraft] (BiblioCraft-Mod-1.7.10.jar)
UC chocolateQuest{1.0} [Chocolate Quest] (chocolateQuest-1.7.10-1.0.jar)
UC CoroAI{v1.0} [CoroAI] (CoroUtil-1.0.jar)
UC ExtendedRenderer{v1.0} [Extended Renderer] (CoroUtil-1.0.jar)
UC ConfigMod{v1.0} [Extended Mod Config] (CoroUtil-1.0.jar)
UC craftguide{1.6.8.2} [CraftGuide] (CraftGuide-1.6.8.2-forge.jar)
UC creativecore{1.3.14} [CreativeCore] (CreativeCore v1.3.21 mc1.7.10.jar)
UC CustomSpawner{3.3.0} [DrZhark's CustomSpawner] (CustomMobSpawner 3.3.0.zip)
UC dldungeonsjdg{1.8.5} [Doomlike Dungeons] (DoomlikeDungeons-1.8.5-MC1.7.10.jar)
UC MoCreatures{6.3.1} [DrZhark's Mo'Creatures Mod] (DrZharks MoCreatures Mod v6.3.1.zip)
UC dungeonpack{1.7.10-1.0} [Dungeon Pack] (dungeonpack-1.7.10-1.0.jar)
UC DefaultMobPack{1.7.10} [DefaultMobPack] (FamiliarsDefaultMobPack-1.7.10.jar)
UC ExtendedFamPack{1.7.10} [ExtendedFamPack] (FamiliarsExtendedFamPack-1.7.10.jar)
UC HerobrineFamPack{1.7.10} [HerobrineFamPack] (FamiliarsHerobrineFamPack-1.7.10.jar)
UE hamsterrific{0.2.0} [Hamsterrific] (Hamsterrific-0 2.jar)
UC iChunUtil{4.1.3} [iChunUtil] (iChun-Util-Mod-1.7.10.jar)
UC InventoryPets{1.3.8} [Inventory Pets] (inventorypets-1.7.10-1.3.8-universal.jar)
UC ani_koto{v1.6} [Kingdoms of the Overworld Mod] (Kingdoms of the Overworld-1.7.10-1.6.jar)
UC lucky{5.1.0} [Lucky Block] (Lucky-Block-Mod-1.7.10.jar)
UC lycanitesmobs{1.13.0.5 - MC 1.7.10} [Lycanites Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UC arcticmobs{1.13.0.5 - MC 1.7.10} [Lycanites Arctic Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UC demonmobs{1.13.0.5 - MC 1.7.10} [Lycanites Demon Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UC desertmobs{1.13.0.5 - MC 1.7.10} [Lycanites Desert Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UC forestmobs{1.13.0.5 - MC 1.7.10} [Lycanites Forest Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UC freshwatermobs{1.13.0.5 - MC 1.7.10} [Lycanites Freshwater Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UC infernomobs{1.13.0.5 - MC 1.7.10} [Lycanites Inferno Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UC junglemobs{1.13.0.5 - MC 1.7.10} [Lycanites Jungle Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UC mountainmobs{1.13.0.5 - MC 1.7.10} [Lycanites Mountain Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UC plainsmobs{1.13.0.5 - MC 1.7.10} [Lycanites Plains Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UC saltwatermobs{1.13.0.5 - MC 1.7.10} [Lycanites Saltwater Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UC shadowmobs{1.13.0.5 - MC 1.7.10} [Lycanites Shadow Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UC swampmobs{1.13.0.5 - MC 1.7.10} [Lycanites Swamp Mobs] (LycanitesMobsComplete 1.13.0.5 [1.7.10].jar)
UC malisiscore{1.7.10-0.14.0} [MalisisCore] (malisiscore-1.7.10-0.14.0.jar)
UC malisisdoors{1.7.10-1.13.0} [Malisis' Doors] (malisisdoors-1.7.10-1.13.0.jar)
UC RadixCore{2.1.1} [RadixCore] (RadixCore-1.7.10-2.1.1-universal.jar)
UC MCA{1.7.10-5.1.1.0} [Minecraft Comes Alive] (MCA-1.7.10-5.1.1.0-universal.jar)
UC mhfc{0.2.501a_1.7.10} [Monster Hunter Frontier Mod] (mhfc-0.2.501a_1.7.10.jar)
UC millenaire{5.2.0b5} [Millénaire] (millenaire-5.2b5.jar)
UC Morph{0.9.2} [Morph] (Morphing-Mod-1.7.10.jar)
UC cfm{3.4.7} [�9MrCrayfish's Furniture Mod] (MrCrayfishs-Furniture-Mod-1.7.10.jar)
UC MutantCreatures{1.4.9} [Mutant Creatures] (MutantCreatures-1.7.10-1.4.9.jar)
UC OreSpawn{1.7.10.20} [OreSpawn] (orespawn-1.7.10-20.0.jar)
UC reccomplex{0.9.6.3} [Recurrent Complex] (RecurrentComplex-0.9.6.3.jar)
UC ReiMinimap{1.7.10} [Rei's Minimap] (Reis-Minimap-Mod-1.7.10.jar)
UC ResourceLoader{1.2} [Resource Loader] (ResourceLoader-1.2.jar)
UC Roguelike{1.3.6.3} [Roguelike Dungeons] (roguelike-1.7.10-1.3.6.3.jar)
UC AS_Ruins{15.3} [Ruins Spawning System] (Ruins-1.7.10.jar)
UC ashjacksimukraftreloaded{1.0.4a} [Sim-U-Kraft Reloaded] (Sim-U-Kraft Reloaded - 1.0.4a.jar)
UC TragicMC{2.46.2858} [TragicMC 2] (TragicMC2-1.7.10-2.46.2858.jar)
UC TwilightForest{2.3.7} [The Twilight Forest] (twilightforest-1.7.10-2.3.7.jar)
UC AS_UpdateCheck{1.1.7} [AtomicStryker Update Check Mod] (UpdateCheckerMod-1.7.10.jar)
UC weather2{v2.3.10} [Localized Weather & Storms] (weather2-2.3.10 for MC v1.7.10.jar)
UC worldedit{6.0-beta-01} [WorldEdit] (worldedit-forge-mc1.7.10-6.0-beta-01.jar)
GL info: ' Vendor: 'NVIDIA Corporation' Version: '2.1 NVIDIA-10.8.14 310.42.15f01' Renderer: 'NVIDIA GeForce GT 650M OpenGL Engine'

BUMP PLEASE HELP

Bump: still has not been answered yet

Bump idk how many i can do ):

It's probably and incompatible mod or you need to update your mod loader(hope your using forge). If not, update your drivers.

Could you post your latest log under C:\Users\{User}\AppData\Roaming\.minecraft\logs or wherever you minecraft is located.

You mean from vanaila minecraft folder or the forge?

What do u suggest i do, i tried getting a different link to a different file of the hamsterific mod, do you know a link that will work??

What is the section?