Latest Timekpr-gui 0.3.7 doesn't start in Ubuntu 14.04 LTS (segmentation fault)
I use Gnome-panel (gnome-session-flashback)
ubuntu@ubuntu:~$ pkexec /usr/bin/timekpr-gui
error: XDG_RUNTIME_DIR not set in the environment.
(timekpr-gui3.py:2159): Gtk-CRITICAL **: _gtk_style_cascade_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed
(timekpr-gui3.py:2159): Gtk-CRITICAL **: _gtk_style_provider_private_lookup: assertion 'GTK_IS_STYLE_PROVIDER_PRIVATE (provider)' failed
(timekpr-gui3.py:2159): Gtk-CRITICAL **: _gtk_css_lookup_resolve: assertion 'GTK_IS_STYLE_PROVIDER_PRIVATE (provider)' failed
(timekpr-gui3.py:2159): Gtk-CRITICAL **: _gtk_css_rgba_value_get_rgba: assertion 'rgba->class == >K_CSS_VALUE_RGBA' failed
[..]
(timekpr-gui3.py:2159): Gtk-CRITICAL **: gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed
/usr/share/pyshared/timekpr/timekpr-gui3.py:96: Warning: invalid (NULL) pointer instance
self.builder.add_from_file(ui_file)
/usr/share/pyshared/timekpr/timekpr-gui3.py:96: Warning: g_signal_connect_object: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
self.builder.add_from_file(ui_file)
(timekpr-gui3.py:2159): Gtk-CRITICAL **: _gtk_style_cascade_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed
(timekpr-gui3.py:2159): Gtk-CRITICAL **: gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed
/usr/share/pyshared/timekpr/timekpr-gui3.py:96: Warning: g_object_get: assertion 'G_IS_OBJECT (object)' failed
self.builder.add_from_file(ui_file)
(timekpr-gui3.py:2159): Gtk-CRITICAL **: gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed
/usr/share/pyshared/timekpr/timekpr-gui3.py:96: Warning: value "TRUE" of type 'gboolean' is invalid or out of range for property 'visible' of type 'gboolean'
self.builder.add_from_file(ui_file)
(timekpr-gui3.py:2159): Gdk-CRITICAL **: gdk_keymap_get_for_display: assertion 'GDK_IS_DISPLAY (display)' failed
(timekpr-gui3.py:2159): Gtk-CRITICAL **: _gtk_replace_virtual_modifiers: assertion 'GDK_IS_KEYMAP (keymap)' failed
(timekpr-gui3.py:2159): Gtk-CRITICAL **: _gtk_style_cascade_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed
(timekpr-gui3.py:2159): Gdk-CRITICAL **: gdk_pango_context_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed
(timekpr-gui3.py:2159): Pango-CRITICAL **: pango_context_set_font_description: assertion 'context != NULL' failed
(timekpr-gui3.py:2159): Pango-CRITICAL **: pango_context_set_base_dir: assertion 'context != NULL' failed
(timekpr-gui3.py:2159): Pango-CRITICAL **: pango_context_set_language: assertion 'context != NULL' failed
(timekpr-gui3.py:2159): Pango-CRITICAL **: pango_layout_new: assertion 'context != NULL' failed
(timekpr-gui3.py:2159): Pango-CRITICAL **: pango_layout_set_attributes: assertion 'layout != NULL' failed
(timekpr-gui3.py:2159): Pango-CRITICAL **: pango_layout_set_text: assertion 'layout != NULL' failed
(timekpr-gui3.py:2159): Pango-CRITICAL **: pango_layout_get_unknown_glyphs_count: assertion 'PANGO_IS_LAYOUT (layout)' failed
/usr/share/pyshared/timekpr/timekpr-gui3.py:96: Warning: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
self.builder.add_from_file(ui_file)
(timekpr-gui3.py:2159): Gtk-CRITICAL **: gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed
(timekpr-gui3.py:2159): Gtk-CRITICAL **: _gtk_style_cascade_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed
(timekpr-gui3.py:2159): Gtk-CRITICAL **: gtk_settings_get_for_screen: assertion 'GDK_IS_SCREEN (screen)' failed
(timekpr-gui3.py:2159): Gtk-CRITICAL **: _gtk_style_provider_private_lookup: assertion 'GTK_IS_STYLE_PROVIDER_PRIVATE (provider)' failed
(timekpr-gui3.py:2159): Gtk-CRITICAL **: _gtk_css_lookup_resolve: assertion 'GTK_IS_STYLE_PROVIDER_PRIVATE (provider)' failed
(timekpr-gui3.py:2159): Gtk-CRITICAL **: _gtk_style_provider_private_lookup: assertion 'GTK_IS_STYLE_PROVIDER_PRIVATE (provider)' failed
(timekpr-gui3.py:2159): Gtk-CRITICAL **: _gtk_css_lookup_resolve: assertion 'GTK_IS_STYLE_PROVIDER_PRIVATE (provider)' failed
/usr/bin/timekpr-gui: line 2: 2159 Segmentation fault (core dumped) /usr/bin/python2 /usr/share/pyshared/timekpr/timekpr-gui3.py
ubuntu@ubuntu:~$
Do You have gtk3 installed?