I started a new world with this mod, and I was able to craft all of the components that make bone tools, such as the pickaxe, etc., but when I tried to make a bone pickaxe, no icon floated above the workbench to let me know that it could be crafted. When I right-clicked with the flint knife, nothing happened. I checked the manual to make sure that I had the correct pattern, and I tested it in creative mode, but I could not craft any of the bone or stone tools. I am not sure if this is another mod conflicting with this one or a bug.

Most probably you used leather strip instead of grass lead