X5 not opening on Windows 10

Just downloaded X5 to windows 10. It gets as far as the  splash page "Loading application" and then disappears. It even brought up the register page. I've tried uninstalling it and reinstalling it. I've tried the repair on the uninstall, I've tried the F8. I temporarily had the Corel 2018 trial and it seemed to work fine until it expired. Not sure what's wrong.