In the last couple of weeks I've noticed that when the computer awakes from sleep, the wallapers on my two monitors have disappeared. If I go into the monitor settings the settings appear to have lost the pictures and I have to select the pictures.
The only thing that has changed in the last couple of weeks is that I have upgraded Stardock Fences program from version 2 to version 3
I presume there are other DisplayFusion user who also use Fences and so I wonder whether they have had the same problem.