I created a mod in which there are four new ores better than diamond. They allows to create sword, pickaxe, axe, shovel and hoe. The tools works. When I wanted enchant the pickaxe, I succeeded with the enchantment table to put unbreaking III. Next, I enchanted a book with fortune III. When I put in a anvil my enchanted pickaxe with the fortune III book, the red cross displayed on the arrow. I have the same issue to merge two enchanted pickaxes in a anvil. How could I programme the enchantments for the new tools ? I can send you many code parts.