If you are unable to uninstall Crazytalk 6 then you will still be able to install it again as long as you have not used up all the 5 clean installs allowed.
If you are planning a full reinstall of the Operating System then Crazytalk 6 will be removed during that process. Then you can install it again afterwards. Uninstalling Crazytalk 6 if you still have a virus won't make any difference. You need to clean your system completely first.
If you don't plan to reinstall the OS then please contact Support for assistance in removing Crazytalk 6.
Please use the link below.
http://www.reallusion.com/CustomerSupport/User/QForm.aspx.
Peter
Forum Administrator
www.reallusion.com