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java.lang.ArrayIndexOutOfBoundsException: 4	at main.ironbackpacks.events.ForgeEventHandler.getEventBackpacks(ForgeEventHandler.java:149)	at main.ironbackpacks.events.ForgeEventHandler.getFilterCondenserAndHopperBackpacks(ForgeEventHandler.java:125)	at main.ironbackpacks.events.ForgeEventHandler.onItemPickupEvent(ForgeEventHandler.java:47)	at cpw.mods.fml.common.eventhandler.ASMEventHandler_682_ForgeEventHandler_onItemPickupEvent_EntityItemPickupEvent.invoke(.dynamic)	at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54)	at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:140)	at net.minecraft.entity.item.EntityItem.func_70100_b_(EntityItem.java:345)	at net.minecraft.entity.player.EntityPlayer.func_71044_o(EntityPlayer.java:609)	at net.minecraft.entity.player.EntityPlayer.func_70636_d(EntityPlayer.java:600)	at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:1611)	at net.minecraft.entity.player.EntityPlayer.func_70071_h_(EntityPlayer.java:288)	at net.minecraft.entity.player.EntityPlayerMP.func_71127_g(EntityPlayerMP.java:295)	at net.minecraft.network.NetHandlerPlayServer.func_147347_a(NetHandlerPlayServer.java:303)	at net.minecraft.network.play.client.C03PacketPlayer.func_148833_a(SourceFile:137)	at net.minecraft.network.play.client.C03PacketPlayer$C04PacketPlayerPosition.func_148833_a(SourceFile:63)	at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212)	at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165)	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:659)	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:334)	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547)	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)