Opening Excel files from google docs.

Hej guys.

One of my laptop clients have a very interesting problem.

He had made a big spreadsheet in google docs and now he finaly got office 2010, so he wants to download the spreadsheet from google, but when he wants to open the file, like every other excel file, the file shows as damaged or corrupt, then i tryed from my laptop, no problem opening the file. He doesn't have problems with opening other excel files or any other files in office.

I have now been searching for a while but no one seems to have the same problem.

I have tryed:

• Opening and reparing
• uncheck DDE
• Opening and saving from my laptop (Works but not a good solution)

Any idears guys?