5.33 malware can not install ?

I have a win7 pro 32bits , installed 5.33 on 9/7/2017 from piriform site.

I had trouble during the upgrade, and also found that the monitoring app abended.

Now I can't seem to uninstall to get 5.34.

what to do ?

You should be able to just install 5.34 over the top of 5.33. I should overwrite it.