I am using a pretty complicated spreadsheet to do monthly inventory (also
uses formulas to calculate total sold, & value of current inventory) of about
300 items, but have never gotten this message before. I've used tihis same
spreadsheet for the past 2 years also, without glitches. I tried deleting the
cells in question and starting with new cells, but still got the message "too
many different cell formats". I was trying to add color fill to differentiate
groups of products. Heop please!