I had a similar problem recently, black screen without icons while everything was fine in the Desktop folder. I also thought it was Wallpaper Engine, but even after I fired him, nothing changed. Fence 6 didn't want to launch either. Frankly, it becomes a pain to make it work properly. If someone has found a reliable solution, I'm a taker too!
Hello,
Sorry to hear you are having issues. But, it is best to start new thread for your issue. We will try to help you there.
Thank you,
Basj,
Stardock Community Assistant.