I commented out the throw exception line. It looks like that function was just used to get the PortalId. I hard coded my PortalId in the other methods in the DNNChatProvider.vb file. This got rid of that error message.
Now when the chat loads, it just says:
Please wait, connecting to server...
The server is reset and this chat room is deleted. Please close the window and try again.
Even if I add a new room, I get that message. I'm trying to make sure this works for DNN before purchasing. Please help