After a few days of deliberation, I finally have my Disqus comments loading properly. There are a number of tutorials and blog posts on this topic already, not to mention the help section at Disqus, but for those still struggling, this may be your solution.
Rather than explaining every step I took to arrive at a working solution, I figured I would just show you exactly how I have all of my components set up. Hopefully this will help someone out there who is fist fighting the “we were unable to load Disqus” message.
Disqus Admin Settings
Octopress _config.yml Settings
One thing definitely worth noting is on the Disqus end, I have my website url filled in as http://daniel-sullivan.com, which is the redirected domain. In my _config.yml file under Main Configs, I have the url set as http://dsully360.github.io, which is where it is being hosted. This is really what was tripping me up.
Also, make sure you include the “http://” in your config file. Originally I had it as dsully360.github.io and it was not working. As soon as I added http:// in front of it, it started working.
Hopefully this helps. Please feel free to leave a comment if you have something to add.