Here is my crash report:

---- Minecraft Crash Report ----
// You're mean.

Time: 6/23/15 2:11 PM
Description: There was a severe problem during mod loading that has caused the game to fail

cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: com/gildedgames/util/spawning/SpawnSettings
at cpw.mods.fml.common.LoadController.transition(LoadController.java:163)
at cpw.mods.fml.common.Loader.initializeMods(Loader.java:715)
at cpw.mods.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:310)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:552)
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(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.NoClassDefFoundError: com/gildedgames/util/spawning/SpawnSettings
at net.aetherteam.aether.Aether.init(Aether.java:306)
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:532)
at sun.reflect.GeneratedMethodAccessor3.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:212)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:190)
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:119)
at cpw.mods.fml.common.Loader.initializeMods(Loader.java:713)
... 10 more
Caused by: java.lang.ClassNotFoundException: com.gildedgames.util.spawning.SpawnSettings
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 37 more
Caused by: java.lang.NullPointerException

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 8.1 (amd64) version 6.3
Java Version: 1.8.0_40, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 1598300728 bytes (1524 MB) / 2446852096 bytes (2333 MB) up to 2863661056 bytes (2731 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1024m -XX:MaxPermSize=128m -Xms2048M -Xmx3072M -XX:PermSize=256M
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 10.13.3.1408 33 mods loaded, 33 mods active
mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized
FML{7.10.99.99} [Forge Mod Loader] (modpack.jar) Unloaded->Constructed->Pre-initialized->Initialized
Forge{10.13.3.1408} [Minecraft Forge] (modpack.jar) Unloaded->Constructed->Pre-initialized->Initialized
ThaumicTinkerer-preloader{0.1} [Thaumic Tinkerer Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized
mod_ThreadedLighting{1.7.10-1.0} [Threaded Lighting] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized
gilded-games-util{1.7.10-1.1} [Gilded Games Utility] (gilded-games-util.jar) Unloaded->Constructed->Pre-initialized->Initialized
Baubles{1.0.1.10} [Baubles] (Baubles-1.7.10-1.0.1.10.jar) Unloaded->Constructed->Pre-initialized->Initialized
Thaumcraft{4.2.3.5} [Thaumcraft] (Thaumcraft-1.7.10-4.2.3.5.jar) Unloaded->Constructed->Pre-initialized->Initialized
arsmagica2{1.4.0.005} [Ars Magica 2] (1.7.10_AM2_1.4.0.005.jar) Unloaded->Constructed->Pre-initialized->Initialized
iChunUtil{4.1.2} [iChunUtil] (_iChun-Util-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized
aether{Alpha 1.7.10-1.4} [Aether II] (Aether II 1.7.10.jar) Unloaded->Constructed->Pre-initialized->Errored
Backpack{2.0.1} [Backpack] (backpack-2.0.1-1.7.x.jar) Unloaded->Constructed->Pre-initialized->Initialized
tennox_bacteria{2.3.2} [Bacteria Mod] (Bacteria-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized
BiblioCraft{1.10.4} [BiblioCraft] (BiblioCraft[v1.10.4][MC1.7.10].jar) Unloaded->Constructed->Pre-initialized->Initialized
Mantle{1.7.10-0.3.2.jenkins184} [Mantle] (Mantle-1.7.10-0.3.2.jar) Unloaded->Constructed->Pre-initialized->Initialized
Natura{2.2.0} [Natura] (natura-1.7.10-2.2.0-b1.jar) Unloaded->Constructed->Pre-initialized->Initialized
BiomesOPlenty{2.1.0} [Biomes O' Plenty] (BiomesOPlenty 1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized
BiblioWoodsBoP{1.9} [BiblioWoods Biomes O'Plenty Edition] (BiblioWoods[BiomesOPlenty][v1.9].jar) Unloaded->Constructed->Pre-initialized->Initialized
Forestry{3.5.7.16} [Forestry for Minecraft] (forestry_1.7.10-3.5.7.16.jar) Unloaded->Constructed->Pre-initialized->Initialized
BiblioWoodsForestry{1.7} [BiblioWoods Forestry Edition] (BiblioWoods[Forestry][v1.7].jar) Unloaded->Constructed->Pre-initialized->Initialized
BiblioWoodsNatura{1.5} [BiblioWoods Natura Edition] (BiblioWoods[Natura][v1.5].jar) Unloaded->Constructed->Pre-initialized->Initialized
Botania{r1.6-189} [Botania] (Botania r1.6-189.jar) Unloaded->Constructed->Pre-initialized->Initialized
camping{2.1} [The Camping Mod 2] (Camping-Mod-1.7.10.jar) Unloaded->Constructed->Pre-initialized->Initialized
radixcore{1.3.4} [RadixCore] (RadixCore-1.7.10-1.3.4-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized
mca{4.1.5} [Minecraft Comes Alive] (MCA-1.7.10-4.1.5-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized
Morph{0.9.1} [Morph] (Morph-Beta-0.9.1.jar) Unloaded->Constructed->Pre-initialized->Initialized
Mystcraft{0.11.9.03} [Mystcraft] (mystcraft-1.7.10-0.11.9.03.jar) Unloaded->Constructed->Pre-initialized->Initialized
TConstruct{1.7.10-1.8.2.build858} [Tinkers' Construct] (TConstruct-1.7.10-1.8.2a.jar) Unloaded->Constructed->Pre-initialized->Initialized
thaumcraftneiplugin{1.7.10-1.7} [Thaumcraft NEI Plugin] (thaumcraftneiplugin-1.7.10-1.7-client.jar) Unloaded->Constructed->Pre-initialized->Initialized
ThaumicTinkerer{unspecified} [Thaumic Tinkerer] (ThaumicTinkerer-2.5-1.7.10-502.jar) Unloaded->Constructed->Pre-initialized->Initialized
ThaumicExploration{0.6.0} [Thaumic Exploration] (ThaumicExploration-1.7.10-1.1-37.jar) Unloaded->Constructed->Pre-initialized->Initialized
TwilightForest{2.3.3} [The Twilight Forest] (twilightforest-1.7.10-2.3.3.jar) Unloaded->Constructed->Pre-initialized->Initialized
witchery{0.20.0} [Witchery] (witchery-1.7.10-0.20.0.jar) Unloaded->Constructed->Pre-initialized->Initialized
GL info: ' Vendor: 'Intel' Version: '4.2.0 - Build 10.18.10.3345' Renderer: 'Intel(R) HD Graphics 4600'
Mantle Environment: Environment healthy.
TConstruct Environment: Environment healthy.

NEVER MIND I SOLVED THE PROBLEM, I just had to download a different gilded.