I have the same problem in Ubuntu 11.10 alpha 2 and Nautilus 3 : Each time I do a right click and select "Properties" on a file, not only mp4, Nautilus freezes, no Properties window appears and I have to force quit the program.
Some of the error messages I get when I run Nautilus from terminal : (nautilus:6306): GLib-GObject-CRITICAL **: g_value_get_object: assertion `G_VALUE_HOLDS_OBJECT (value)' failed (nautilus:6440): GLib-GObject-CRITICAL **: g_value_get_object: assertion `G_VALUE_HOLDS_OBJECT (value)' failed ** Changed in: nautilus (Ubuntu) Status: Expired => Confirmed ** Changed in: nautilus (Ubuntu) Status: Confirmed => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/775819 Title: Nautilus crashes on clicking "properties" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/775819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs