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java.lang.NoSuchMethodError: net.minecraft.client.Minecraft.getMinecraft()Lnet/minecraft/client/Minecraft;
at codechicken.core.CCUpdateChecker.tick(CCUpdateChecker.java:59)
at codechicken.core.internal.CCCEventHandler.clientTick(CCCEventHandler.java:17)
at cpw.mods.fml.common.eventhandler.ASMEventHandler_155_CCCEventHandler_clientTick_ClientTickEvent.invoke(.dynamic)
at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:51)
at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:122)
at cpw.mods.fml.common.FMLCommonHandler.onPostClientTick(FMLCommonHandler.java:329)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:2015)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:917)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:835)
at net.minecraft.client.main.Main.main(SourceFile:103)
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:134)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

can someone please tell me what's wrong?