For me the exact error now is: "Flash Player upgrade required. You must download and install the latest version of Adobe Flash Player to view this content".
Here is a public facebook video that I found. https://www.facebook.com/photo.php?v=732937036756915&set=vb.491750840875537 ** Changed in: gnash (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/417412 Title: Facebook-Videos don't play To manage notifications about this bug go to: https://bugs.launchpad.net/gnash/+bug/417412/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs