Solution of Pages, cannot find index.xml.

According to my blog analysis, this post is the most searched
and also searched from some foriegn countries.
So I attemped to translate into English.
The error of Pages that indicates cannnot find index.xml is
caused by difference of software varsion.
May be the icon of your Pages is a pen and paper (newer), or an ink bottle (older).
If you open the file with newer pages, the file is create by the older pages,
or opposite, the error “cannot find index.xml” occurs.
Acctually, I just see this error dialogs in only Japanese, so it is not accurate.
The way to avoid this error, use “export to pages ’09” function
or update your pages to new version.
Thank you for reading my post.