Thanks for all the comments.
I'm trying to add a target server to a new engine. This target already exists in another delphix engine. I try and run addhostgui.exe on the target but it says delphix connector service is not running. I try and start this but it immediately stops....the event log doesn't really say much apart from
failed to kill process 400: System.ArgumentException: Process with an Id of 400 is not running. at System.Diagnostics.Process.GetProcessById(Int32 processId, String machineName)
at DelphixConnectorService.DelphixConnector.kill(Int32 pid)
Should the delphix connector start up and stay running? should I create a support ticket?