I upgraded to High Sierra. Trend Micro AV broke. I downloaded the new installer, and during the install preparation I get a message "Unable to install Trend Micro AntiVirus. You must remove the security software shown below from your Mac before installing Trend Micro Antivirus; Kaspersky Virus Scanner". I had a free scanner app installed from them, uninstalled it, rebooted, and tried again. Got same message. Used Finder to remove any traces in libraries etc. Rebooted. Tried again. Same message. What are my options? Thank you very much.