There is a service called mctkmd still installed that is causing the check to fail.
Follow the steps here to check MCT software is uninstalled:
http://displaylink.com/support/ticket.php?id=359
If it is removed from the program files, you still have the mctkmd service hanging around. I think you can uninstall it with:
And type: "sc delete mctkmd"
Hopefully that should fix it.
Wim