Thank you. It was the cell formatting that caused the problem. I had to
reset all cells to "General", and later reformat cells as needed.

"Niek Otten" wrote:

http://xldynamic.com/source/xld.xlFAQ0024.html


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Kind regards,

Niek Otten
Microsoft MVP - Excel

"frankfine" wrote in message ...
|I have a large spreadsheet that will not calculate the most simple of formulas.
| - auto calculate is on.
| - it still won't calculate using F9.
| Any suggestions?