When I attempt to install Cisco AnyConnect 4.9.01.0100 (and other versions) installer, i receive the following error message "vpnclient cannot be installed on this computer. A version of TUN is already installed on the system that is incompatible with the AnyConnect client"
I have deleted the all vpn applications that I know of (e.g., Cisco VPN client, Shimo, etc.). Rebooted, repaired permission and still the intsaller will not install the app. Same error message.