--- a/files/usr/lib/cinnamon-desktop-editor/cinnamon-desktop-editor.py

+++ b/files/usr/lib/cinnamon-desktop-editor/cinnamon-desktop-editor.py

@@ -101,7 +107,7 @@ class IconPicker(object):

         else:

             theme = Gtk.IconTheme.get_default()

             icon_info = theme.lookup_icon(fn, 64, 0)

-            icon_info_fn = icon_info.get_filename()

+            icon_info_fn = icon_info.get_filename() if icon_info != None else None

             if icon_info_fn:

                 chooser.set_filename(icon_info_fn)

         filter = Gtk.FileFilter();