Thank you for the swift response, but unfortunately that still didn't work.
To add a little clarification I apparently forgot last night, the rest of the page loads perfectly, and the 'frame' of the chat visibly appears though I can't click any of it. However, the "buffering/loading the chat" wheel just spins around endlessly like it cannot make a connection until it finally gives an "Unable to load" notice and a button to retry. And, again, as soon as I hit the HTML5 link when loading the chat full-screen it works fine, it appears Avast thinks there's something wrong with the Chatango flash widget, but NOTHING else. Unfortunately, when it's embedded in another site, I can't switch it.