Broken Desktop

[David]

With the update in Rawhide to 4.10 from 4.8 my desktop was broken. Parts
of the 'starters' in Settings Manager. Most notably the "Desktop"
starter. So I can not set the options there and the options that were
set apparently have 'disappeared' too. It may be related but a 'mouse
click' on the desktop no longer puts up a drop-down menu and my 'desktop
icons' are no longer there.

What package is missing or damaged?
-- 

  David