If you have nautilus installed this becomes a problem because firefox wants to use dbus engine. Firefox apparently uses the dbus engine first to launch org.freedesktop.FileManager1 which nautilus is currently the only app that gets launched/used this way. You have to install your own org.freedesktop.FileManager1.service file in ~/.local/share/dbus-1/services
Also look to see if you have other FileManager1 filemanagers registered to dbus. I had two custom Nemo and Caja, and i just copied those files from their default location to my home directory location and changed the Exec. Firefox gives up, and goes the xdg route - which I thought was supposed to be the standard. This is a complete mess. This link describes the process in detail: http://debian.distrosfaqs.org /debian-user/iceweasel-and-dolphin/ and https://bugzilla.mozilla.org/show_bug.cgi?id=1106916 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/133133 Title: "Open containing folder" is only working if nautilus is present Status in The Mozilla Firefox Browser: Confirmed Status in firefox package in Ubuntu: Fix Released Bug description: Binary package hint: firefox Tools->Downloads-> (Right click)->Open containing folder Result: Nothing happens (not even an error). Expected: An error, a dialog asking to choose a file manager or just konqueror showing the folder. Fix: add the following line to prefs.js user_pref("network.protocol-handler.app.file", "konqueror"); ProblemType: Bug Architecture: i386 Date: Fri Aug 17 12:54:22 2007 DistroRelease: Ubuntu 7.04 Package: firefox 2.0.0.5+1-0ubuntu1 PackageArchitecture: i386 SourcePackage: firefox Uname: Linux localhost 2.6.20-12-generic #2 SMP Wed Mar 21 20:55:46 UTC 2007 i686 GNU/Linux To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/133133/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp