Excel 2007 "Error Detected" When Saving

[alexcn]

Excel was working fine last week, now suddenly since this past
weekend, I can not save an xlsm document. Everytime I hit save, even
without making a single change to a file I open, I get:

"Errors were detected while saving <filename>. Microsoft Office Excel
may be able to save the file by removing or repairing some features.
To make the repairs in a new file, click Continue. To cancel saving
the file, click cancel."

When you try and repair it just says it cannot, however the exact same
workbook works fine on another machine. I have tried switching the
destination for the save, but to no avail. It seems other people have
had similar problems but, as yet, no one has posted a solution.

HELP!!!

 

[alexcn]

And when you try and recover it:

"Errors were detected in file.
Damage to the file was so extensive that repairs were not possible.
Excel attempted to save your formulas and values, but some data may
have been lost or corrupted.""