I'm using Word 2007. I created a massive (300 page) Word document by copy-pasting text, tables and images from various external (Word and Excel) documents. This might not have been the best way but I needed a quick sample document which I managed in the end.
The problem is, along with the text and data, some links got copied over to the new Word document too. I don't want any external links in my Word document; I want it completely separate from all the documents I copied data from. So I broke links by going to the 'Office Button' > Prepare > Edit Links to files, selected all links and clicked 'Break links'. All existing links got broken, but one remained:

I have NO idea what this NULL source file is and am not able to break this link. When I try to update all my fields by doing ctrl+A and F9, I get the following error message:

This is really frustrating, as I just cannot locate the faulty link. I've scanned through my entire (300 page) document and still couldn't find a way to locate where this 'chart' object is.
Has anyone else experienced a similar problem in Word 2007/2010? Any help on how to locate the faulty link or break it would be greatly appreciated!


