Nightly is on version 38, you might see alot of changes when you update. Please also update your version of Firefox to 35.0.1 and restart Firefox to see if there are any changes.

As for the chat window not opening, by default the chat window will pop up on the bottom right of the active tab window. If you have opened the chat in its own window in the past this should not affect where it opens.

I understand that you have already Toggled About:config "loop.throttled" , no help. Turned off Zone Alarm firewall... disabled AVG free and it will not open.

Do you have any program blocking port 443?

Thanks for your reply. Port 443 is open. Once I click on "start a new conversation" absolutely nothing happens... that means, there is no video chat window that opens up, and I don't have any other instance of it already running. As I said.. on my laptop ( windows 7 ) it works fine... however on my computer ( Windows 8.1 64 bit ) the window never even opens up. Any other thoughts???? HELP!

solved the problem ! Used "Revo uninstallers" to remove all instances of firefox on my computer. I had another instance of "Firefox portable" that was installed. Once I eliminated all of those.. I did a fresh install and Viola! It works.