So, I've made a custom modpack for me and my friends with around 80 mods for Minecraft 1.7.10. Whenever I try to launch it, the game just closes before even loading and returns to the Technic Launcher. I don't think it even generates an actual crash report but in the console it says this:
[B#347] [14:45:19] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[B#347] [14:45:19] [main/INFO] [LaunchWrapper]: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[B#347] [14:45:19] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
[B#347] [14:45:19] [main/INFO] [FML]: Forge Mod Loader version 7.10.0.1150 for Minecraft 1.7.10 loading
[B#347] [14:45:19] [main/INFO] [FML]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_11, running on Windows 7:amd64:6.1, installed at F:\Program Files\Java 8u11
[B#347] [14:45:19] [main/WARN] [FML]: The coremod codechicken.core.launch.CodeChickenCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[B#347] [14:45:19] [main/WARN] [FML]: The coremod cofh.asm.LoadingPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[B#347] [14:45:19] [main/WARN] [FML]: The coremod fastcraft.LoadingPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[B#347] [14:45:19] [main/WARN] [FML]: The coremod codechicken.core.launch.DepLoader does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[B#347] [14:45:19] [main/WARN] [FML]: The coremod mrtjp.relocation.asm.RelocationPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[B#347] [14:45:19] [main/WARN] [FML]: The coremod ic2.core.coremod.IC2core does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[B#347] [14:45:19] [main/WARN] [FML]: The coremod invtweaks.forge.asm.FMLPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[B#347] [14:45:19] [main/WARN] [FML]: The coremod pcl.lc.coremod.LCCoreMod does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[B#347] [14:45:19] [main/INFO] [LCCoreMod]: LCCoreMod ready for action!
[B#347] [14:45:19] [main/WARN] [FML]: The coremod mmmlibx.lib.multiModel.MMMLoader.MMMCoremod does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[B#347] [14:45:19] [main/WARN] [FML]: The coremod mekanism.common.asm.LoadingHook does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[B#347] [14:45:19] [main/WARN] [FML]: The coremod micdoodle8.mods.miccore.MicdoodlePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[B#347] MicdoodleCore searching for dependencies in mods file: C:\Users\Nathan\AppData\Roaming\.technic\modpacks\project-allcraft\mods
[B#347] [14:45:19] [main/WARN] [FML]: The coremod mcp.mobius.mobiuscore.asm.CoreDescription does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[B#347] [14:45:19] [main/WARN] [FML]: The coremod mrtjp.core.handler.CorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[B#347] [14:45:19] [main/WARN] [FML]: The coremod codechicken.nei.asm.NEICorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[B#347] [14:45:19] [main/INFO] [PowerConverters]: Adding PowerConverters to Transformer Exclusions list.
[B#347] [14:45:19] [main/WARN] [FML]: The coremod codechicken.core.launch.DepLoader does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[B#347] [14:45:19] [main/WARN] [FML]: The coremod lumien.randomthings.Transformer.RTLoadingPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[B#347] [14:45:19] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[B#347] [14:45:19] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
[B#347] [14:45:19] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[B#347] [14:45:19] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[B#347] [14:45:19] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[B#347] [14:45:21] [main/INFO] [FML]: Found valid fingerprint for Minecraft Forge. Certificate fingerprint e3c3d50c7c986df74c645c0ac54639741c90a557
[B#347] [14:45:21] [main/INFO] [FML]: Found valid fingerprint for Minecraft. Certificate fingerprint cd99959656f753dc28d863b46769f7f8fbaefcfc
[B#347] [14:45:21] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[B#347] [14:45:21] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[B#347] [14:45:21] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[B#347] [14:45:21] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[B#347] [14:45:21] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[B#347] [14:45:21] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[B#347] Exception in thread "main" java.lang.NoSuchMethodError: scala.Predef$.ArrowAssoc(Ljava/lang/Object;)Ljava/lang/Object;
[B#347] at mrtjp.relocation.asm.Transformer.<init>(transformer.scala:67)
[B#347] at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
[B#347] at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
[B#347] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
[B#347] at java.lang.reflect.Constructor.newInstance(Unknown Source)
[B#347] at java.lang.Class.newInstance(Unknown Source)
[B#347] at net.minecraft.launchwrapper.LaunchClassLoader.registerTransformer(LaunchClassLoader.java:86)
[B#347] at cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper.injectIntoClassLoader(CoreModManager.java:99)
[B#347] at net.minecraft.launchwrapper.Launch.launch(Launch.java:114)
[B#347] at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Here's the download if it helps: http://api.technicpack.net/modpack/project-allcraft