The original application was canceled by Facebook. It was a developer app so it should have been fine, at least for a while. They must really want people to switch.
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Here is yet another way to revert back. [Firefox users only]
â– 1. Click the link below and add-on Greasemonkey
https://addons.mozilla.org/en-US/firefox/addon/748
â– 2. Click the next link below and on the top right click "install this script"
http://userscripts.org/scripts/show/33638
â– 3. Restart Firefox
That's it. It loads slow the first time yet from then on it performs a quick re-direct to the old version. I liked the original app as well, yet this works nicely for the time being.
(success rate for this method not looking too good but if you willing to try anyway..)