HalionOne won't uninstall

I am trying to unistall HalionOne from my PC laptop, but it keep asking for a HalionOne.msi file that is supposed to be in some temp folder. The file is not there, nor is it anywhere in the system, nor in the Desktop where I have my main Cubase Studio 4 installation.

I was able to remove Studio 4 from the laptop with no problem at all.

I tried installing /deinstalling Studio 4 again, but the problem with HalionOne is still there.

Any ideas?