Hi all,
I just wanted to post a quick message letting those know who are having problems with older dreams needing an MPEG2 codec on Windows 10. I got mine to work after wrestling around with it for about a week. I am using Deskscapes 10 beta. I like all the new options, but it often freezes up when trying to change dreams with multiple monitors. I have not had this issue, once I cleaned up my codecs.
I am using the klite codec pack MEGA. During installation, I did a standard automated install and agreed to allow the program to uninstall other conflicting codecs, like CCCP, windows media codecs, as I think they conflict with Klite. During installation, I also checked any box I saw that referred to MPEG2.
After installation, these dreams started working again 
The main one I was having problems with was by Stardock (Forever Frost) My personal favorite as well as Dryscape. Both are working now.
Z