Similar situation. Launch button added, but everything crashed when I
went back to add the icon.
** Attachment added: Panel Crash Report
http://librarian.launchpad.net/6392135/_usr_bin_xfce4-panel.1000.crash
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panel crashed during attempt to add new launch icon
Public bug reported:
The panel crashed, and shortly afterwards I had nothing on the screen
but the XFCE wallpaper.
** Affects: xfdesktop (Ubuntu)
Importance: Undecided
Status: Unconfirmed
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Panel crashed and then desktop
https://launchpad.net/bugs/84638
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ubuntu-bugs mailing
** Attachment added: XFdesktop Crash Report
http://librarian.launchpad.net/6392146/_usr_bin_xfdesktop.1000.crash
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Panel crashed and then desktop
https://launchpad.net/bugs/84638
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ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs