Why do TOC numbers revert to "1" when I send to others?

[Tim S.]

After updating the Table of Contents, saving the document with the correct
page numbers, I then send the document to another person who opens the
document and sees each TOC entry as page 1. Why?

 

[Rhonda from Western Australia]

If you're using Word 2003, it could be related to this issue:
http://support.microsoft.com/kb/912940/en-us