I still have it too. What I see is, if I right-click on the Stardock folder in Start10, it is referencing an empty folder located in
Again, that's just an empty folder. You might look in that path and see if you still have an empty folder named Stardock there, and if it's not, create one. Don't know that would fix it, but maybe?
The Start10 Stardock program items themselves are individual shortcuts located elsewhere, you could probably recreate them, but seems like that would be a pain in the neck and hopefully there's a better way. Those are in
if you want to see if they're still there.