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I'm did this

Hello. When I start client with my mod, I get crash: cpw.mods.fml.common.LoaderException: java.lang.NoSuchFieldError: air at cpw.mods.fml.common.LoadController.transition(LoadController.java:162) at cpw.mods.fml.common.Loader.initializeMods(Loader.java:691) at cpw.mods.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:288) at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:527) at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:815) 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) Caused by: java.lang.NoSuchFieldError: air Code in my mod: BlockBase block = new BlockBase(Material.air); How should I write name of material?? Material.*** I would be very thankful for the help

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Hello. Who knows what class code works when I, being on the mob, click LShift? Very necessary fixed a jumping player.

The sign has a packet Packet130UpdateSign I need to do the same, only with another par?

For example, like a plate, right?

Does not work in the preservation of NBT, now explain all the details. There is a block, he tileentity. In tileentity string with the name of the block. When you activate the unit GUI opens to the input field, I enter the name of the block, it should be maintained. GUI: private TileEntityBlock entityBlock; ... public GuiBlock (InventoryPlayer inventoryPlayer, TileEntityBlock tileEntity) { super (new ContainerTiny (inventoryPlayer, tileEntity)); this.entityBlock = tileEntity; } That got a copy tileentity Now introduce more line public void keyTyped (char c, int i) { if (textfield.textboxKeyTyped (c, i)) { entityBlock.name = textfield.getText (); } else { super.keyTyped (c, i); } } Well, then render. The fact that all work in the name of each block but do not conserved. In TileEntityBlock: public String name = ""; .... @ Override public void writeToNBT (NBTTagCompound nbt) { super.writeToNBT (nbt); nbt.setString ("name", name); } @ Override public void readFromNBT (NBTTagCompound nbt) { super.readFromNBT (nbt); name = nbt.getString ("name"); } Why does not work?

Hi All! I made my slot for ContainerPlayer.java, but when I put back an item that item appears in the slot for a helmet. SlotBackpack Add my slot in ContainerPlayer.java Please, help me. And sorry for my bad English