I don't do screenshots very often, but according to my vague remembrance the utility tends to crash when a previous screenshot *.png file is already present on the desktop.
When I have more observations, I'll share them here accordingly. -- gnome-panel-screenshot crashes when saving PNG https://launchpad.net/bugs/59985 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs