Hello,
I think this may due to VPN module not running. Check with lsmod or lsmod -a to confirm.
Another reason I can think of is your Binary Path Directory "BinDirPath" in /etc/CiscoSystemsVPNClient/
vpnclient.ini is not configured for the correct directory.
If the Module is not running, Restart the module using the "./vpnclient_init restart"
Can anyone think of any other issues here.
Hope that helps,