Problem with accessing Rev. Learning Center

[Ralph R. Forehand]

When I click on the "Learning Center" Channel in the revOnline Viewer it goes to the following URL;

http://revonline.runrev.com/channels/learning_center.rvc.gz

and responds with the following message;"Bad Channel
The channel URL you have entered does not point to a valid channel stack"

What is the correct URL??

Thanks,
Ralph