Hello,
Have you downloaded the online or offline installer?

Offline installer does not need internet connection to install the MCU family packages.
I'd recommend you to download and install offline installer.
If both installers are causing an issue, please try to follow the steps below:
1) uninstall/delete your previous versions of CodeWarrior you are not going to use any more.
2) reboot your computer
3) run the offline installer with administrator rights
4) choose Qorivva support in modular installer to be installed with CodeWarrior only and let other installer options default
Do you observe the same error again?
thanks for the update...
Stan