Can not open Excel workbook
 

I have a shared Excel workbook in a heterogeneous network (Win 2K and XP) on
a Samba file server. In the last week an engineer changed a formula (changed
Count to Counta). Now when I open this workbook on 2 different 2K machines it
opens to the point I can see the workbook, I get the derided hourglass and it
says on the bottom of the screen Calculating 100% and thats it. I dont
think the change had anything to do with my problem but ?. This spreadsheet
opens fine on any XP machine but is slow to open on other 2K machines and
again wont open on the 2 machines I need it to open on. I have tried to
reinstall and update Excel and save the file in €˜2K file format.