Installing UiPath - missing UiRobot service (18.1.3)

OK, so if this is the case, when a workflow is executed from Studio the process is created? If I try running from studio it fails with:

14:05:12:819 => [ERROR] [UiPath.Workflow.Logging.StudioTraceListener] [9] System.AggregateException: One or more errors occurred. —> System.ServiceModel.EndpointNotFoundException: There was no endpoint listening at net.pipe://localhost/UiPath/service/duplex/agent/xxx that could accept the message. This is often caused by an incorrect address or SOAP action. See InnerException, if present, for more details.

Thanks
Doug