Could not start the BlackBerry MDS on Local Computer. Error 203: The system could not find the environment option that was entered.

Today on one of our servers one of our users reported that there Blackberry had stopped receiving emails, when i looked at the service i noticed the blackberry router and MDS service had stopped, the router restarted ok but the MDS service kept saying

‘Could not start the BlackBerry MDS on Local Computer. Error 203: […]