comodo firewall 10 interface freeze

I was using comodo firewall for years, and the previous version was fine on my win 8.1 laptop. After updated to the latest version, the interface froze everytime after one single click, left a shortcut on desktop. No operation can be done. And I cannot exit, not even end the process in task manager.
Everytime after re-start, it says there is an error with comodo firewall and need to run diagnose. The diagnose result says nothing wrong. But the freezing and all other problems stay the same. Also it made the restarting of OS take ages. Have to uninstall it for now. :-
After I uninstalled the comodo firewall, the internet security essentials still exists on my computer. Do they need to be uninstall separately?

[After I uninstalled the comodo firewall, the internet security essentials still exists on my computer. Do they need to be uninstall separately?

Yes they do. Just through the Add / Remove Programs

Hi lulu_c,
We suggest you to re-install Comodo. We have been reported problems with upgrade.

Thank you
-umesh