Can't Start SSH

Hi I have had virtualmin running on my server for several months and all has been going well. Recently I haven't been able to start SSH. When I click "Start SSH" I get the following error --

Failed to start SSH server : Rather than invoking init scripts through /etc/init.d, use the service(8) utility, e.g. service ssh start

Since the script you are attempting to invoke has been converted to an Upstart job, you may also use the start(8) utility, e.g. start ssh start: Job failed to start