This has been bugging me for a while because I can't find out why the recipes are not working and when I check the logs it says that the block is unknown. This is only happening for recipes that use blocks from my mod and the example I gave is only for one of the recipes. Thank you for your help.

 

 

 

1) Code is text (as are errors) so post them as text not images

2) Post your code

{
  "type": "minecraft:crafting_shaped",
  "pattern": [
    "C",
    "C",
    "S"
  ],

  "key":
  {
    "C":
    {
      "item": "cummod:cum_stone"
    },

    "S":
    {
      "item": "minecraft:stick"
    }
  },

  "result":
  {
    "item": "cummod:cum_stone_sword",
    "count": 1
  }
}

 

package assets.cummod;

import net.minecraft.block.Block;
import net.minecraft.block.material.Material;
import net.minecraft.client.renderer.block.model.ModelResourceLocation;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.item.*;
import net.minecraftforge.client.model.ModelLoader;
import net.minecraftforge.common.util.EnumHelper;
import net.minecraftforge.fml.common.Mod;
import net.minecraftforge.fml.common.Mod.EventHandler;
import net.minecraftforge.fml.common.event.FMLInitializationEvent;
import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
import net.minecraftforge.fml.common.registry.ForgeRegistries;
import net.minecraftforge.fml.common.registry.GameRegistry;
import org.apache.logging.log4j.Logger;

import java.util.ArrayList;


@Mod(modid = CumMod.MODID, name = CumMod.NAME, version = CumMod.VERSION, acceptedMinecraftVersions = CumMod.MC_VERSION)
public class CumMod {

    public static final String MODID = "cummod";
    public static final String NAME = "Cum Mod";
    public static final String VERSION = "1.0";
    public static final String MC_VERSION = "[1.12.2]";
    public static final String RESOURCE_INVENTORY  = "inventory";


    public static Block cumOre;
    public static Block cumBlock;

    public static Item.ToolMaterial sock;

    public static Item.ToolMaterial cumStone;
    public static Item.ToolMaterial hardenedCum;

    public static ArrayList<Block> blocks;
    public static ArrayList<Item> items;

    private static Logger logger;

    @EventHandler
    public void preInit(FMLPreInitializationEvent event) {
        logger = event.getModLog();

        //sock = EnumHelper.addArmorMaterial()

        cumStone = EnumHelper.addToolMaterial("Cum Stone",2,1800,20f,3,30);

        blocks = new ArrayList<>();
        blocks.add(new CumOre(Material.ROCK));
        blocks.add(new CumBlock());
        blocks.add(new CumStone());
        blocks.forEach(b -> registerBlock(b));

        items = new ArrayList<>();
        items.add(new Item().setRegistryName(MODID,"cum_drop").setUnlocalizedName("cum_drop").setCreativeTab(CreativeTabs.BREWING));
        items.add(new ItemSword(cumStone).setRegistryName(MODID,"cum_stone_sword").setUnlocalizedName("cum_stone_sword").setCreativeTab(CreativeTabs.COMBAT).setMaxDamage(10));
        //items.add(new ItemArmor())
        items.forEach(i -> ForgeRegistries.ITEMS.register(i));
        items.forEach(i -> ModelLoader.setCustomModelResourceLocation(i,0,new ModelResourceLocation(i.getRegistryName(),RESOURCE_INVENTORY)));


        GameRegistry.addSmelting(blocks.get(0), new ItemStack(items.get(0)),1.5f);

    }

    @EventHandler
    public void init(FMLInitializationEvent event) {
        logger.info("Mod initlialised :" + NAME);
        GameRegistry.registerWorldGenerator(new CumWorldGenerator(),0);
    }

    @EventHandler
    public void postInit(FMLPostInitializationEvent event) {

    }

    public void registerBlock(Block b){
        ForgeRegistries.BLOCKS.register(b);
        ItemBlock itemBlock = new ItemBlock(b);
        itemBlock.setRegistryName(b.getRegistryName());
        itemBlock.setUnlocalizedName(((EatingmachineBlock) b).getName());
        ForgeRegistries.ITEMS.register(itemBlock);
        ModelResourceLocation chinaModelResourceLocation = new ModelResourceLocation(MODID + ":" + ((EatingmachineBlock) b).getName(), RESOURCE_INVENTORY);
        final int DEFAULT_ITEM_SUBTYPE = 0;
        ModelLoader.setCustomModelResourceLocation(itemBlock, DEFAULT_ITEM_SUBTYPE, chinaModelResourceLocation);


    }

}

 

Ok, so, not only is 1.12 no longer supported, you aren't even registering things right. As it hasn't really changed (until a new thing in 1.15), I'm happy to give you this link.

https://mcforge.readthedocs.io/en/1.12.x/concepts/registries/#registering-things

 

But no further support will be offered to versions below 1.14