Due to recent changes at the CBC, my playbook won't stream CBC One anymore.

All I get is an unsupported media type error.
There CBC app doesn't help at all, and won't load from the CBC at all. Any suggestions?

CBC stopped supporting the BB10 app a while ago. The good news is you can make a browser shortcut for the CBC mobile site which will work just fine. It will show up in your desktop with a CBC icon.