解决安装MS Expression Web遇到的错误

今天下午听Qi Jin说起MS的silverlight，顺便安装了一下微软推出的Web开发工具MS Expression Web。不想在安装过程中出现错误：

Error Message: “The 2007 Microsoft Office system does not support upgrading from a prerelease version of the 2007 Microsoft Office system.”

解决办法是卸载各种与office 2007有关的beta版本。这篇文章提及了这个问题。在我下载掉2007 Microsoft Office Add-in: Microsoft Save as PDF (Beta)后，安装就能进行了。

In addition to the programs listed in the KB, this error message could also be caused by the German Language Pack for Office 2007 and Outlook 2007 add-ins (known ones so far: Windows Live Local Addin for Outlook, Calendar Printing Assistant for Outlook 2007).