I was having a similar problem with Firefox on Linux Mint 13 "Maya" MATE. For some reason, SoundConverter was associated with this MIME type, so that when I tried to "Open Containing Folder" in Firefox, it would invoke SoundConverter for any download.
By changing the entries in ~/.local/share/applications/mimeapps.list from : inode/directory=soundconverter.desktop; to : inode/directory=caja.desktop; functionality was restored. Thanks! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/133133 Title: "Open containing folder" is only working if nautilus is present To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/133133/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs