The product page for HALOT at http://www.logos.com/product/5226/hebrew-and-aramaic-lexicon-of-the-old-testament has a link for a page called "Product Guide for Hebrew Text and Tools" with a link target of http://www.logos.com/hebrew/ot . That link yields a "not found" page.
I did a search on the link text (product guide hebrew text) and didn't find such a page, though I found other article pages as "product guides."
If I may be so bold, you might consider running a link checker against your publicly accessible pages (esp. product pages). The discovery of these bad links is automatable and a solved problem. (Of course, what to do when you find them isn't. 
Donnie
