Since my boss firmly believes that the best websites are redesigned yearly (and all attempts to dissuade him merely steels his resolve,) I need to maintain a sizable array of redirected pages. I have basically used this article as my resource:

http://www.sitepoint.com/how-to-redirect-old-urls-php/

However, when I check old pages through Google Webmaster Tools, I am still getting about 60 crawl errors. Those URLs are in my array, but when I check, yes indeed, they still throw a 404 error.

I have configured everything exactly as this article outlines. URLs above and below some of these lines work just fine.

Does anyone have any idea what might be going wrong?