I have set up live chat in my dev org and am able to conduct a session without problem.  However,  when I use a custom chat page,  no connection is made and the page just hangs at the point of connecting to an agent.

I'm seeing the following error in the console,  which might be the cause - I'm not sure:

Uncaught Error: Organization ID must be set!
window.liveagent.chasitor.init @ chasitor.js:60
Sfdc.provide.init @ LiveAgentChatWindow.js:22
(anonymous function) @ LiveAgentChat:32

followed by a series of 503 errors for the audio.

Does anyone have any suggestions?