Ubuntu :: Gnumeric Spreadsheet Printing Hash Marks

I have created a very simple spreadsheet - using gnumeric - with small numbers and simple formulas - the numbers fit easily inside their cells - the formatting all seems in order BEFORE I try to print. When I set up the spreadsheet for printing - and "print preview" the document, I see hash marks in place of numbers in a majority of the cells. When I print the document, the hash marks are printed, in place of the numbers. When I view the document under normal circumstances, for editing - the hash marks are not present. All seems well. I cannot print the spreadsheet without the hash marks (#####) appearing!