java.lang.NullPointerException
	at net.minecraft.src.ItemStack.getIconIndex(ItemStack.java:81)
	at net.minecraft.src.RenderItem.renderItemIntoGUI(RenderItem.java:229)
	at net.minecraft.src.GuiContainer.drawSlotInventory(GuiContainer.java:178)
	at net.minecraft.src.GuiContainer.drawScreen(GuiContainer.java:51)
	at net.minecraft.src.GuiInventory.drawScreen(GuiInventory.java:51)
	at net.minecraft.src.EntityRenderer.updateCameraAndRender(EntityRenderer.java:797)
	at net.minecraft.src.EntityRendererProxy.updateCameraAndRender(EntityRendererProxy.java:17)
	at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:737)
	at net.minecraft.client.Minecraft.run(Minecraft.java:634)
	at java.lang.Thread.run(Unknown Source)