Maybe...

XL: Error Message: Too Many Different Cell Formats
http://support.microsoft.com/default.aspx?scid=213904

A few people have said that OpenOffice.Org has been able to open the file. Then
they clean it up and save it there. Then excel can open that cleaned up
version.

http://www.openoffice.org, a 60-65 meg download or a CD

XROCKYISBACKX wrote:

When i try to open a saved excel workbook it will not let me open it.It just
says too many formatted cells.

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Dave Peterson