Minecraft wiki entry for Creating_behavior_packs, associated text: If your behavior pack references a resource pack, the mcpack won't automatically include that resource pack as well, even if you have given the behavior pack_manifest a dependency on that pack. If you have a resource pack dependency either: make a .mcpack for the resource pack as well, or make a world and add the behavior and resource packs you want to export and then export that world. When that world is imported, the save folder for that world will have a folder for the behavior packs and resource packs of that world. You can copy those packs to your local folders to be able to see them in the behavior and resource pack menus and add them to other worlds.