Thanks for your report, that dialog is part of software-properties, I adjusted the package name. Are there any errors displayed in the file '~/.xsession-errors'? Also, try running 'gksudo software-properties- gtk', does that work for you?
** Package changed: synaptic (Ubuntu) => software-properties (Ubuntu) ** Changed in: software-properties (Ubuntu) Importance: Undecided => Low ** Changed in: software-properties (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/723216 Title: cant directly add a ppa using the "Add" button -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs