Microsoft today released a pair of updates to address a bug introduced in Microsoft Office 2008 for Mac Service Pack 2 released last month that prevented users from opening some Office documents saved in Microsoft's Open XML format. A description of the issue is included on Microsoft's support document regarding the update.
Compatibility is improved. This update fixes an issue that causes Office 2008 for Mac to display an error message that resembles the following:
"Microsoft Excel cannot open the file. You may have to download the latest updates for Office for Mac. Do you want to visit the Microsoft Web site for more information?"