Mac Excel to Windows Excel Error

[ciavyn]

When I send my .xls files from my Mac (Office 2008) to my boss's Windows machine (Office 2003), he gets an error message when he attempts to open the excel spreadsheet: Excel has encountered an error and must shut down. I've sent files to other computers and not had a problem, and my boss has received other excel files and been able to open them. So it must be something between these two machines/softwares that is affecting it. Any suggestions or ideas? I can add any additional info you need.

Mac is running on Snow Leopard. Windows is running on (wait for it...) Vista.

 

[MisterMe]

... I've sent files to other computers ...

What do you mean by "other computers"?

 

[Gregg2]

Does the offending Windows machine make .xls files or some other suffix? I think there's a newer standard for Word and Excel files that could be at the root of the problem. It's .dox for Word, I think. Anyway, if that's the case, a setting needs to be changed to read the .xls file.