I has the Bug #967347, and whit the install of this package it works perfectly, not more crash, so I confirmed the solution in my case. sudo apt-get install gnome-icon-theme-full
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/807129 Title: ClockScreenlet.py crashed with GError in load_buttons(): Icon 'gtk- close' not present in theme To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/indiv-screenlets/+bug/807129/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs