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Hey guys! I'm trying to add more mods to my world but it's not working.

I don't want to sacrifice any mods if i don't have to. Please help!

---- Minecraft Crash Report ----
// Surprise! Haha. Well, this is awkward.

Time: 05/06/15 10:06 PM
Description: Updating screen events

java.lang.NoClassDefFoundError: io/netty/bootstrap/ServerBootstrap
at net.minecraft.network.NetworkSystem.func_151270_a(NetworkSystem.java:107)
at net.minecraft.client.Minecraft.func_71371_a(Minecraft.java:2136)
at cpw.mods.fml.client.FMLClientHandler.tryLoadExistingWorld(FMLClientHandler.java:694)
at net.minecraft.client.gui.GuiSelectWorld.func_146615_e(GuiSelectWorld.java:183)
at net.minecraft.client.gui.GuiSelectWorld.func_146284_a(GuiSelectWorld.java:130)
at net.minecraft.client.gui.GuiScreen.func_73864_a(GuiScreen.java:225)
at net.minecraft.client.gui.GuiScreen.func_146274_d(GuiScreen.java:296)
at net.minecraft.client.gui.GuiScreen.func_146269_k(GuiScreen.java:268)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1640)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:973)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:898)
at net.minecraft.client.main.Main.main(SourceFile:148)
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 net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: java.lang.ClassNotFoundException: io.netty.bootstrap.ServerBootstrap
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 18 more
Caused by: java.lang.OutOfMemoryError: Java heap space
at org.objectweb.asm.Label.a(Unknown Source)
at org.objectweb.asm.Label.a(Unknown Source)
at org.objectweb.asm.MethodWriter.visitJumpInsn(Unknown Source)
at org.objectweb.asm.tree.JumpInsnNode.accept(Unknown Source)
at org.objectweb.asm.tree.InsnList.accept(Unknown Source)
at org.objectweb.asm.tree.MethodNode.accept(Unknown Source)
at org.objectweb.asm.tree.MethodNode.accept(Unknown Source)
at org.objectweb.asm.tree.ClassNode.accept(Unknown Source)
at cpw.mods.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:81)
at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279)
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176)
... 20 more

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

-- Head --
Stacktrace:
at net.minecraft.network.NetworkSystem.func_151270_a(NetworkSystem.java:107)
at net.minecraft.client.Minecraft.func_71371_a(Minecraft.java:2136)
at cpw.mods.fml.client.FMLClientHandler.tryLoadExistingWorld(FMLClientHandler.java:694)
at net.minecraft.client.gui.GuiSelectWorld.func_146615_e(GuiSelectWorld.java:183)
at net.minecraft.client.gui.GuiSelectWorld.func_146284_a(GuiSelectWorld.java:130)
at net.minecraft.client.gui.GuiScreen.func_73864_a(GuiScreen.java:225)
at net.minecraft.client.gui.GuiScreen.func_146274_d(GuiScreen.java:296)
at net.minecraft.client.gui.GuiScreen.func_146269_k(GuiScreen.java:268)

-- Affected screen --
Details:
Screen name: net.minecraft.client.gui.GuiMainMenu
Stacktrace:
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1640)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:973)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:898)
at net.minecraft.client.main.Main.main(SourceFile:148)
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 net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 8.1 (x86) version 6.3
Java Version: 1.8.0_31, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 35312 bytes (0 MB) / 523501568 bytes (499 MB) up to 523501568 bytes (499 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
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 v7.10.140.1401 Minecraft Forge 10.13.3.1401 29 mods loaded, 29 mods active
mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
FML{7.10.140.1401} [Forge Mod Loader] (forge-1.7.10-10.13.3.1401-1710ls.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Forge{10.13.3.1401} [Minecraft Forge] (forge-1.7.10-10.13.3.1401-1710ls.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
SC0_SpaceCore{0.7.14} [SpaceCore] (1.7.10-SpaceCore-0.7.14.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
bspkrsCore{6.13} [bspkrsCore] ([1.7.10]bspkrsCore-universal-6.13.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Treecapitator{1.7.2} [Treecapitator] ([1.7.2]Treecapitator-universal-2.0.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
njaymod_4{1.0.0} [NJay's Unicorn Mod] ([MC 1.7.10 1.7.2] NJays Unicorn Mod.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
babyanimals{1.7.10-2} [Baby Animals Model Swapper] (Baby-Animals-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Backpack{2.0.0} [Backpack] (backpack-2.0.0-1.7.x (1).jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
BiomesOPlenty{2.1.0} [Biomes O' Plenty] (BiomesOPlenty-1.7.10-2.1.0.991-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
CustomSpawner{3.3.0} [DrZhark's CustomSpawner] (CustomMobSpawner 3.3.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
doggytalents{v1.9.0a} [Doggy Talents] (Doggy-Talents-Mod-1.7.10.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
InventoryPets{1.1.2a} [Inventory Pets] (inventorypets-1.7.10-1.1.2a.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
modelcitizens{1.0} [Model Citizens] (Model-Citizens-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
me{1.3.1.2} [More Enchantments] (More-Enchantments-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
AencEx{0.0.1} [AencEx] (More-Enchantments-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Baubles{1.0.1.7} [Baubles] (Baubles-1.7.10-1.0.1.7.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
pokecube_adventures{0.1.0} [Pokecube Adventures] (Pokecube-Revival-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
PokecubeCompat{1.0} [Pokecube Compat] (Pokecube-Revival-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
pokecube{1.5.0} [Pokecube] (Pokecube-Revival-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
pokecube_generations{7.0.0} [Pokecube Generations] (Pokecube-Revival-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
pokecube_lineage{0.9} [Pokecube Lineage] (Pokecube-Revival-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
pokecube_origin{1.5.0} [Pokecube Origin] (Pokecube-Revival-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
pokecube_thutcore{0.0.1} [ThutCore: Pokecube Edition] (Pokecube-Revival-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
pokecube_world{0.0.1} [Thut's WorldGen: Pokecube Edition] (Pokecube-Revival-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
recallstones{0.4.16} [Recall Stones] (Recall-Stones-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
SC0_Wings{1.2.6} [Survival Wings] (Survival-Wings-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
Talismans 2{1.1.0} [Talismans 2] (Talismans2-1.7.10-1.1.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
ucm{1.0} [Useful Carrots Mod] (Useful-Carrots-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
GL info: ' Vendor: 'Intel' Version: '4.2.0 - Build 10.18.10.3316' Renderer: 'Intel(R) HD Graphics 4400'
Launched Version: 1.7.10-Forge10.13.3.1401-1710ls
LWJGL: 2.9.1
OpenGL: Intel(R) HD Graphics 4400 GL version 4.2.0 - Build 10.18.10.3316, Intel
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.

Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: [Storyblock.zip]
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Anisotropic Filtering: Off (1)

Anyone?