Can't remove internal hyperlink to bookmark in Word 2010

I am composing a document in Word 2010 where I have created bookmarks and hyperlinks to those bookmarks within the document.  Basically, I'm making it easy for the reader to click on a term and be taken to a place later in the document where there is an explanation of the term.

I've run into 2 related problems:

1) When I test the hyperlinks, some do not take me to the bookmarked location, but instead take me -- after a bit of motion on the screen -- back to the very same hyperlink.  In other cases, the hyperlinks work just fine.  There is a pattern here.  When I hover over the hyperlinks that work, I see the complete path for the file plus the bookmark.  When I hover over the hyperlinks that don't work correctly, I see only the bookmark, but not the path.

2) I have tried to remove the hyperlinks that are working incorrectly, but I can't.  When I right click on the link, and then click on "remove hyperlink," nothing happens.  Similarly, if I click "edit hyperlink" and delete the link in the dialog box, nothing happens.

On theory that I have a corrupted file, I tried creating a blank document and pasting the content from the old file into it.  That didn't work.

Help!