Sorry to hear you are having trouble.
How do I make/use widgets/gadgets/.desktop themes?
First, as mentioned, DesktopX, and any widgets created with it, is no longer offered or support (for many years).
Anything found on Wincustomize (generally) requires one (or more) of our other apps to utilize. For example, Dreams require DeskScapes, skins, require WindowBlinds, etc.
If you want to utilize any of them, you would need the corresponding product(s).
If Object Desktop Manager is failing to find / install any software, you can always obtain them with either of the below:
Or your account page (what you would need to use for Skins (products that are not installable / exes)):
If it is not on your account, we (likely) no longer support it. Even if it is on your account, any 'Legacy' products are also not supported.
I hope this helps clarify any confusion.
Stardock Customer Service Manager