Robots called from orchestrator fails

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1

Hello,
we did more setups - Orchestrater link to Dev Studio
Orchestrator link to Runtime Machines

Specifically for two runtime machines, jobs fail.
Script with only activity Log Message is successful.

Script which adds item to Orchestrator Queue fails with following error:

“Execution error : System.Xaml.XamlObjectWriterException: Cannot create unknown type ‘{http://schemas.microsoft.com/netfx/2009/xaml/activities}OutArgument({http://schemas.uipath.com/workflow/activities/terminal}TerminalConnection)’.\r\n at System.Xaml.XamlObjectWriter.WriteStartObject(XamlType xamlType)\r\n at System.Xaml.XamlWriter.WriteNode(XamlReader reader)\r\n at System.Xaml.XamlServices.Transform(XamlReader xamlReader, XamlWriter xamlWriter, Boolean closeWriter)\r\n at System.Activities.XamlIntegration.FuncFactory1.Evaluate()\r\n at System.Activities.DynamicActivity.OnInternalCacheMetadata(Boolean createEmptyBindings)\r\n at System.Activities.Activity.InternalCacheMetadata(Boolean createEmptyBindings, IList1& validationErrors)\r\n at System.Activities.ActivityUtilities.ProcessActivity(ChildActivity childActivity, ChildActivity& nextActivity, Stack1& activitiesRemaining, ActivityCallStack parentChain, IList1& validationErrors, ProcessActivityTreeOptions options, ProcessActivityCallback callback)\r\n at System.Activities.ActivityUtilities.ProcessActivityTreeCore(ChildActivity currentActivity, ActivityCallStack parentChain, ProcessActivityTreeOptions options, ProcessActivityCallback callback, IList1& validationErrors)\r\n at System.Activities.ActivityUtilities.CacheRootMetadata(Activity activity, LocationReferenceEnvironment hostEnvironment, ProcessActivityTreeOptions options, ProcessActivityCallback callback, IList1& validationErrors)\r\n at System.Activities.Hosting.WorkflowInstance.ValidateWorkflow(WorkflowInstanceExtensionManager extensionManager)\r\n at System.Activities.Hosting.WorkflowInstance.RegisterExtensionManager(WorkflowInstanceExtensionManager extensionManager)\r\n at System.Activities.WorkflowApplication.EnsureInitialized()\r\n at System.Activities.WorkflowApplication.Enqueue(InstanceOperation operation, Boolean push)\r\n at System.Activities.WorkflowApplication.SimpleOperationAsyncResult.Run(TimeSpan timeout)\r\n at System.Activities.WorkflowApplication.BeginRun(AsyncCallback callback, Object state)\r\n at UiPath.Executor.RobotRunner.<>c__DisplayClass49_0.b__0()”

Another script, where cmd.exe is opend and command shutdown returns following error:

“Execution error : UiPath.Core.SelectorNotFoundException: Cannot find the UI element corresponding to this selector: —> System.Runtime.InteropServices.COMException: Cannot find the UI element corresponding to this selector: \r\n at UiPath.UiNodeClass.FindFirst(UiFindScope scope, String nodeID)\r\n at UiPath.Core.UiElement.FindFirst(FindScope scope, Selector selector)\r\n — End of inner exception stack trace —\r\n at UiPath.Core.Activities.TaskAsyncCodeActivity`1.EndExecute(AsyncCodeActivityContext context, IAsyncResult result)\r\n at System.Activities.AsyncCodeActivity.System.Activities.IAsyncCodeActivity.FinishExecution(AsyncCodeActivityContext context, IAsyncResult result)\r\n at System.Activities.AsyncCodeActivity.CompleteAsyncCodeActivityData.CompleteAsyncCodeActivityWorkItem.Execute(ActivityExecutor executor, BookmarkManager bookmarkManager)”

The same packages on another machines works.

Do you have any idea what might be wrong with installation or setup of the specific machines?

2

For the UnknownType youre missing Terminal package on that machine.

The other one seems like either a standard selector issue or you need to run in interactive session (switch LoginToConsole to false and/or use LaunchWorkflowInteractive).

3

@andrzej.kniola

Finally we were able to retest this problem. You were Right, First error was caused by missing Package - Terminal Activites.
Second error was caused by incorrect selector. Both were problems of installations (UIPATH studio, Windows).

Thank you.