After domain assign, lightbox will not load images

I recently built a client site in a folder, and when they approved it, I assigned their domain to the folder as an Add-on domain. As usual in this situation, I have to chase down a lot of urls that still have the old, temporary path, not the final path. In this case, I was using a domain called http://www.westcoastdispatch.com, so the work site address was originally http://www.westcoastdispatch.com/SHSFoxes/(etc).

Now that I’ve made it live, we simply use http://www.SHSFoxes.com/(etc). I’ve run into an issue where images in posts and groups won’t open in lightbox, and I can’t really add new ones in BuddyPress. Standard WordPress works fine. When I look at the error log, I see this:

XMLHttpRequest cannot load http://www.westcoastdispatch.com/SHSFoxes/groups/class-of-1952/media/6/. No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘http://www.shsfoxes.com’ is therefore not allowed access.

SO i can see that Buddypress/RTMedia has, somewhere, the wrong/old url path. But I can’t find where to fix this. Any suggestions?

Wordpress 4.3.1 Bbpress 2.5.8 BuddyPress 2.3.4 rtMedia 3.9

Link: http://www.SHSFoxes.com