MainClass 2

//other stuff is before this, no errors occur there
    @EventHandler
    public void init(FMLInitializationEvent event){
        registerBlock(new PetrifiedLog(), "logPetrified"); //register the names of the block and item form of petrified log
        OreDictionary.registerOre("stone", new PetrifiedLog()); //line 37, register the log in the oreDictionary, fails here
    }

    @EventHandler
    public void postInit(FMLPostInitializationEvent event){

    }

    void registerBlock(Block block, String registryName){
        //set the names for the block
        block.setRegistryName(registryName);
        block.setUnlocalizedName(block.getRegistryName().toString());

        //get the item
        ItemBlock item = new ItemBlock(block);

        //set the names for the item
        item.setRegistryName(registryName);
        item.setUnlocalizedName(block.getRegistryName().toString());

        //register the block and item in the game registry, this has nothing to do with the OreDictionary
        GameRegistry.register(block);
        GameRegistry.register(item);
    }
}