I'm not sure what you mean by "steps to produce this error". I put in a recipe in the calculator. That's how I got the error. Today I noticed that when I put in a 16 oz recipe, the recipe calculations were correct. When I changed the oz to 32 (not creating a new recipe, just changing the fields), the calculations then changed to a 3oz recipe instead of a 32 oz. When I changed the recipe back to 16 oz, the error showed up for the 1 oz recipe calculation.