Mod Erreur durant le lancement

[etfs95c]

bonjour,
j'était en train de lancer un modpack quand j'ai eu un crash avec ce message d'erreur:
Time: 11/26/17 4:26 PM
Description: Initializing game

java.lang.NullPointerException: Initializing game
at net.minecraft.client.renderer.block.model.ModelBakery.func_177596_a(ModelBakery.java:441)
at net.minecraftforge.client.model.ModelLoader.func_177590_d(ModelLoader.java:320)
at net.minecraft.client.renderer.block.model.ModelBakery.func_177577_b(ModelBakery.java:170)
at net.minecraftforge.client.model.ModelLoader.func_177570_a(ModelLoader.java:148)
at net.minecraft.client.renderer.block.model.ModelManager.func_110549_a(ModelManager.java:28)
at net.minecraft.client.resources.SimpleReloadableResourceManager.func_110542_a(SimpleReloadableResourceManager.java:122)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:499)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:351)
at net.minecraft.client.main.Main.main(SourceFile:124)
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)
J'espère que vous pourrez m'aidez merci.