Sean,
When I run the error check against your site (http://rf***.com), I see the JFBCSystem plugin as being enabled. However, I am seeing an error that another Facebook extension is enabled. When you open the HTML on your page, if you scroll to the bottom (or just search for all.js), you'll see the second inclusion of the Facebook Javascript library. Whatever extension that is including the Facebook Javascript library again should generally be disabled to ensure no issues.
Other than that, everything looks good on the page. In all honesty, even if you still can't run the error checker for some reason, everything looks good from a manual check... and I wrote the error checker

So, we can help you fix that if it's not working, but I'd just continue on trying to get things going and just testing.
Hope that helps, but if you need anything else, just let us know!
Thanks,
Alex