Au final, je suis passé sur du Kcauldron mais maintenant le crash-report :
Missing Mods:
NotEnoughItems : [1.0.5,)
cpw.mods.fml.common.MissingModsException
at cpw.mods.fml.common.Loader.sortModList(Loader.java:260)
at cpw.mods.fml.common.Loader.loadMods(Loader.java:493)
at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:87)
at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:319)
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:176)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:631)
at java.lang.Thread.run(Thread.java:745)
EDIT : J’ai trouvé, le code chicken core n’était pas la bonne version, merci robin ^^