I can't open an Office document after I install Office 2008 SP2 Update

I can't open an Office document after I install Office 2008 SP2 Update
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Cause: This is a known issue with Office 2008 for Mac Service Pack 2 (12.2.0) that prevents some Open XML Format files from opening. To address this issue, we will release an update in August. In the meantime, you can use one of the following possible solutions.
Solution: Save your Excel workbook by using an earlier version of Office 2008 for Mac.
Solution: Save your Excel workbook by using Office 2004 for Mac with Open XML Converter.
Solution: Save your PowerPoint presentation, such as .pptx, .pptm, or .potx, by using 2007 Microsoft Office Suite Service Pack 2 (SP2) for Windows.
Solution: Save Excel workbooks to the .xlsb format in Excel 2007.
Solution: Save your document to .doc, .xls, or .ppt format by using Office 2008 for Mac 12.1.9 Update or an earlier version.
Solution: Save your document to .doc, .xls, or .ppt format by using Office 2004 for Mac with Open XML Converter.
Solution: Convert your document to .doc, .xls, or .ppt, by using Open XML Converter.
Solution: Save your Word or Excel documents by using 2007 Microsoft Office Suite Service Pack 2 (SP2) for Windows.
Solution: Save your document to .doc, .xls, or .ppt format by using Microsoft Office 2003 or an earlier version with Microsoft Office Compatibility Pack.
Solution: Use the AppleTime Machine to roll back to Office 2008 for Mac 12.1.9 Update or an earlier version.
Solution: Remove Office manually, reinstall Microsoft Office 2008 for Mac from the original installation media, and then upgrade to Office 2008 for Mac 12.1.9 Update. Do not upgrade to Microsoft Office 2008 for Mac Service Pack 2 (12.2.0) from Microsoft AutoUpdate.

微软没吃错药吧⋯⋯已知bug不去修正，让顾客重装office?