Hi John,
mmmm.....suggest you uninstall PFE and delete any folders/files that it left behind and reboot your system.
Re-install,but before you do please turn off your security features,also you can disconnect from the internet and tell it to leave PFE alone,this you will have to do in your settings.
Once you have done all that,then re-install but not in C:\Program Files...
There will be no virus in your installer,so Kaspersky is telling porky pies to you,but by the sounds of it your install of PFE is corrupt and you may have issues if you continue..