Sorry to hear about the trouble you're having with TTV! Unfortunately, I'm unable to produce the error locally in either Chrome, IE8, or Firefox 3.5 running on Windows 7 with Adobe Flash Player 10.
Are you trying view the videos behind a corporate proxy or firewall? Sometimes corporate networks block traffic to content like TTV unless specific traffic exceptions are granted. Also, have you tried using Firefox? If possible, I'd suggest trying Firefox with Firebug. That should help you further debug what's happening on your computer (i.e. is it a network problem, is it a JS error, etc.).
If you can send any additional details or test results, we're here to provide any assistance that we can.