You receive an error message when you try to install an XML expansion pack in Office Word 2003 or Office Excel 2003

If you have a Multilanguage User Interface (MUI) for an Asian language (such as Chinese Traditional, Chinese Simplified, Japanese, or Korean) on your computer, the following behavior may occur. If you try to add an XML expansion pack, you receive the following error message: This issue occurs only with English language versions of Microsoft Office.

This issue occurs if you use double-byte characters, such as Asian language characters, in the smart document manifest namespace.

Do not use double-byte characters in the smart document manifest namespace.

For more information about smart documents, visit the following Microsoft Web site: http://msdn2.microsoft.com/en-us/library/aa203672(office.11).aspx (http://msdn2.microsoft.com/en-us/library/aa203672(office.11).aspx)