SysV-controlled services are not being correctly detected in Ubuntu if the chkconfig utility is not installed. An example is xRDP. When installed via apt-get, the xRDP service is controlled by SysV. The service appears if you run service --status-all:
The code is attempting to call chkconfig. On Ubuntu 14 and possibly others, this utility is not available on recent versions of Ubuntu.
As a result, warnings are generated in vcld.log: