Well, when I use Firecalc it give me a result, but if I want to go back and change an item, it takes the change, but then won't give another result (just says, "Done" on the bottom of the screen). Is this supposed to happen? Or is it a Mac thing? On one of our computers, it complains that the browser is old, but at work after I updated the browser, it still did the same thing. Thanks for advice.