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java.lang.NullPointerException: Unexpected error	at mca.core.MCA.getPlayerData(MCA.java:616)	at mca.client.gui.GuiSetup.(GuiSetup.java:58)	at mca.core.forge.GuiHandler.getClientGuiElement(GuiHandler.java:35)	at net.minecraftforge.fml.common.network.NetworkRegistry.getLocalGuiContainer(NetworkRegistry.java:266)	at net.minecraftforge.fml.common.network.internal.FMLNetworkHandler.openGui(FMLNetworkHandler.java:102)	at net.minecraft.entity.player.EntityPlayer.openGui(EntityPlayer.java:2295)	at mca.items.ItemCrystalBall.func_77659_a(ItemCrystalBall.java:55)	at net.minecraft.item.ItemStack.func_77957_a(ItemStack.java:150)	at net.minecraft.client.multiplayer.PlayerControllerMP.func_78769_a(PlayerControllerMP.java:438)	at net.minecraft.client.Minecraft.func_147121_ag(Minecraft.java:1519)	at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:2041)	at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1028)	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:345)	at net.minecraft.client.main.Main.main(SourceFile:120)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:483)	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)	at net.minecraft.launchwrapper.Launch.main(Launch.java:28)