I've tried many uninstall options. None has worked. If someone from Corel reads this post and can help, please contact me at (912) 764-7388. Thank you.
Manual uninstall often remove traces of first installation. Check this article for step-by-step instructions:
If you already tried these steps but got the same issue/error when installing your X8 Professional, I suggest submitting a ticket with the screenshot of the error so you can be properly assisted by Corel Technical support. You can create a support ticket through this link: