Wanting to upgrade to the latest service pack

I want to upgrade to latest service pack on same machine;

It has recognised my license, but when continuing the install it says "if you are changing your computer selecvt "no" deactivate etc etc"

If you want to upgrade on same computer click "No" below to proceed with uninstall"

If I select "No" nothing happens.

Is this just poor programming on behalf of Dassault? you need some quality control on your software guys.