So i have created my first lang file to name my blocks and items and I can't seem to get it to work, so i checked out a tutorial online and it seems to have the same code as me and his is working any help
 

Main

package com.crim.parallelworlds;

import com.crim.parallelworlds.block.ModBlocks;
import com.crim.parallelworlds.item.ModItem;
import com.crim.parallelworlds.proxy.CommonProxy;
import com.crim.parallelworlds.tab.WeaponTab;

import net.minecraft.creativetab.CreativeTabs;
import net.minecraftforge.fml.common.Mod;
import net.minecraftforge.fml.common.Mod.EventHandler;
import net.minecraftforge.fml.common.SidedProxy;
import net.minecraftforge.fml.common.event.FMLInitializationEvent;
import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;

@Mod(modid = ParallelWorldsMain.MODID, name = ParallelWorldsMain.NAME, version = ParallelWorldsMain.VERSION)
public class ParallelWorldsMain {
	
	public static final String MODID = "parallelworlds";
	public static final String NAME = "Parallel Worlds";
	public static final String VERSION = "1.0.0";
	@SidedProxy(clientSide = "com.crim.parallelworlds.proxy.ClientProxy", serverSide = "com.crim.parallelworlds.proxy.CommonProxy")
	public static CommonProxy proxy;
	
	public static WeaponTab weapontab;
	
	
	@Mod.Instance
	public static ParallelWorldsMain instance;
	
	@EventHandler
	public void preInit(FMLPreInitializationEvent e){
		weapontab = new WeaponTab(CreativeTabs.getNextID(), "WeaponTab");
		ModBlocks.preInit();
		ModItem.preInit();
		proxy.preInit(e);
		
	}
	
	@EventHandler
	public void Init(FMLInitializationEvent e){
		proxy.Init(e);
	}
	
	@EventHandler
	public void postInit(FMLPostInitializationEvent e){
		proxy.postInit(e);
	}

}

 

Here is my modblocks file

package com.crim.parallelworlds.block;

import com.crim.parallelworlds.ParallelWorldsMain;

import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.block.model.ModelResourceLocation;
import net.minecraft.init.Items;
import net.minecraft.item.Item;
import net.minecraft.item.ItemBlock;
import net.minecraft.util.ResourceLocation;
import net.minecraftforge.fml.common.registry.GameRegistry;

public class ModBlocks {
	
	public static Block NightOre;
	
	public static void preInit(){
		NightOre = new NightOre(Material.ROCK, "NightOre");
		
		registerBlocks();
	}
	
	public static void registerBlocks(){
		registerBlock(NightOre, "NightOre");
	}
	
	public static void registerBlock(Block block, String name){
		GameRegistry.register(NightOre, new ResourceLocation(ParallelWorldsMain.MODID, "NightOre"));
		GameRegistry.register(new ItemBlock(block), new ResourceLocation(ParallelWorldsMain.MODID, name));
	}

	
	public static void registerRenders(){
		registerRender(NightOre);
	}
	
	public static void registerRender(Block block){
		Item item = Item.getItemFromBlock(block);
		Minecraft.getMinecraft().getRenderItem().getItemModelMesher().register(item, 0, new ModelResourceLocation(ParallelWorldsMain.MODID + ":" + item.getUnlocalizedName().substring(5), "inventory"));
	}
}

And here is my lang file

#tabs
itemGroup.tab_WeaponTab=Weapons Tab
#Items
item.NightGem.name=Night Gem
#Blocks
tile.NightOre.name=Night Ore

 

The lang file is saved under assets folder so I am really confused here,

first of all name your tab_WeaponTab to just weapontab.

Second of all did you name your lang file right and what sort of errors are you getting in  minecraft?

No, he is not properly assigning names I beleive, this:

 

#tabs
itemGroup.tab_WeaponTab=Weapons Tab
#Items
item.NightGem.name=Night Gem
#Blocks
tile.NightOre.name=Night Ore

 

Should be:

 

#tabs
itemGroup.MODID.tab_WeaponTab=Weapons Tab
#Items
item.MODID.NightGem.name=Night Gem
#Blocks
tile.MODID.NightOre.name=Night Ore

 

1) don't use that game registry method. Set the registry name on your block yourself.

2) have you called setUnlocalizedName()? 

rigggggght... You do need to call setUnlocalizedName on the blocks, and name the lang file en_US.lang

Same problem except I called 'setUnlocalizedName()' in the item class

 

_{unrelated note the texture is not showing up either}