This bug has nothing to do with unity, xdg-utils  , unity-2d, or unity-place-files. It is an upstream problem with the desktop files which install wrong handlers for the things (that is if you do not use XFCE)...
The "MimeType=" entry in the: /usr/share/applications/exo-file-manager.desktop /usr/share/applications/exo-mail-reader.desktop /usr/share/applications/exo-web-browser.desktop files should become: "X-XFCE-MimeType=" A quick fix for your problem is to change the entry as needed and update your desktop file database. Changing the entry can be done as root in a terminal this way: sed -i -e 's/^MimeType=/X-XFCE-MimeType=/' \ /usr/share/applications/exo-file-manager.desktop \ /usr/share/applications/exo-mail-reader.desktop \ /usr/share/applications/exo-web-browser.desktop I have prepared a package with the fixed bug in my PPA, so you can install it (you may need to wait till it builds btw) (https://launchpad.net/~phobosk/+archive/phobosk-ppa) Please let someone with the necessary permissions to upload this to the proper natty updates repos... (you can find the debdiff and all needed files in my PPA) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/751374 Title: Dash won't open files anymore To manage notifications about this bug go to: https://bugs.launchpad.net/exo/+bug/751374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs