I have been butting my head against the wall.
WPMUDev Video Tuitorials was only working if a mulsite subsite used original domain.
This of course meant Facebook Sync and settings for Comments Plus would not work correctly.
So I tossed the Videos plugin,
Then I kept running into issues with 3rd party plugins when using WPMUDEV domain mapping. As i dont pay $400 for them, I chose to toss the other plugins.
So i disabled mapped domain in admin dashboard. Totally forgetting about the ultimate facebook integration and comments plus.
5 days and about 10 support tickets later, I ran all sorts of tests on plugins. Installed WPMS into a new machine, put on the basics, and now I am down to this:
WPMUDev Domain Mapping just doesnt play nice with everything.
Solution of course is to use Rons MU Domain Mapping plugin, but then we lose the ability to sell a custom domain as a premium feature only available to paying customers :slight_frown:
...ie, pro sites :slight_frown: