Cannot set unknown member 'UiPath.Core.Activities.InvokeWorkflowFile.ArgumentsVariable'

[manoj_kamedi]

Hi All,

Can someone please help with the below issue,

Note: For the same process, we are able to see that bot is running in another machine which is having the same version installed.

• Info: Cannot set unknown member ‘UiPath.Core.Activities.InvokeWorkflowFile.ArgumentsVariable’.

RemoteException wrapping System.Xaml.XamlObjectWriterException: Cannot set unknown member ‘UiPath.Core.Activities.InvokeWorkflowFile.ArgumentsVariable’.
at System.Xaml.XamlObjectWriter.WriteStartMember(XamlMember property)
at System.Xaml.XamlWriter.WriteNode(XamlReader reader)
at System.Xaml.XamlServices.Transform(XamlReader xamlReader, XamlWriter xamlWriter, Boolean closeWriter)
at System.Activities.XamlIntegration.FuncFactory1.Evaluate() at System.Activities.DynamicActivity.OnInternalCacheMetadata(Boolean createEmptyBindings) at System.Activities.Activity.InternalCacheMetadata(Boolean createEmptyBindings, IList1& validationErrors)
at System.Activities.ActivityUtilities.ProcessActivity(ChildActivity childActivity, ChildActivity& nextActivity, Stack1& activitiesRemaining, ActivityCallStack parentChain, IList1& validationErrors, ProcessActivityTreeOptions options, ProcessActivityCallback callback)
at System.Activities.ActivityUtilities.ProcessActivityTreeCore(ChildActivity currentActivity, ActivityCallStack parentChain, ProcessActivityTreeOptions options, ProcessActivityCallback callback, IList1& validationErrors) at System.Activities.ActivityUtilities.CacheRootMetadata(Activity activity, LocationReferenceEnvironment hostEnvironment, ProcessActivityTreeOptions options, ProcessActivityCallback callback, IList1& validationErrors)
at System.Activities.Hosting.WorkflowInstance.ValidateWorkflow(WorkflowInstanceExtensionManager extensionManager)
at System.Activities.Hosting.WorkflowInstance.RegisterExtensionManager(WorkflowInstanceExtensionManager extensionManager)
at System.Activities.WorkflowApplication.EnsureInitialized()
at System.Activities.WorkflowApplication.Enqueue(InstanceOperation operation, Boolean push)
at System.Activities.WorkflowApplication.SimpleOperationAsyncResult.Run(TimeSpan timeout)
at System.Activities.WorkflowApplication.BeginRun(AsyncCallback callback, Object state)
at UiPath.Executor.RobotRunner.d__83.MoveNext()

[Palaniyappan (Forum Leader)]

@manoj_kamedi

Cannot set unknown member ‘UiPath.Core.Activities.InvokeWorkflowFile.ArgumentsVariable’.

Hi

Welcome back to UiPath forget

Do a upgrade with UiPath.System package and give a try

Have a view on this thread with similar discussions

Error - Cannot set unknown member

We keep getting this errors today: 1- Cannot set unknown member ‘UiPath.Core.Activities.ImageTarget.Profile’. 2- System.Xaml: Cannot set unknown member ‘UiPath.Core.Activities.OpenBrowser.CommunicationMethod’. The first one seems like it has been resolved after updating the packages. The second one we can not manage to resolve it We noticed also that the list of parameters of the activities has changed. The communication method for example didn’t exist before. It seems that UiPath has pushe…

Cannot set unknown member - UiPath.Core.Activities.InvokeWorkflowFile.ArgumentsVariable

Try steps mentioned in below link. Also try to clean your temp files and .nuget files.

Cheers @manoj_kamedi

[Gokul001 (Gokul Balaji)]

Hi @manoj_kamedi

Welcome back to community!!

Try to Reinstall the package

Have a look on the thread

V2018.3 UiPath Community Edition - Troubleshooting Guide

Troubleshooting Guide (UiPath CE 2018.3) “When trying to run the project, I receive the following error: System.AggregateException: One or more errors occurred.” Solution The problem is that UiPath.Service.Host process (the robot) was not restarted at all after the upgrade. This can be done by killing the process in task scheduler, restarting the robot tray or logging out/logging in to your windows account. “I cannot find the machine key in the Add Robot to connect my Robot to Orchestra…

Regards
Gokul

[manoj_kamedi]

Thank you @Palaniyappan and @Gokul001 for a prompt response.

After deleting “USERPROFILE%.nuget” when I tried to reinstall the current package, the below error is appearing. I know it’s for a specific package but how do we fix that ?

Going back to studio and make changes in the code or in any other way ?

The feed ‘Official [https://www.myget.org/F/workflow/]’ lists package ‘UiPath.Credentials.Activities.1.1.6479.13204’ but multiple attempts to download the nupkg have failed. The feed is either invalid or required packages were removed while the current operation was in progress. Verify the package exists on the feed and try again.
RemoteException wrapping NuGet.Protocol.Core.Types.FatalProtocolException: The feed ‘Official [https://www.myget.org/F/workflow/]’ lists package ‘UiPath.Credentials.Activities.1.1.6479.13204’ but multiple attempts to download the nupkg have failed. The feed is either invalid or required packages were removed while the current operation was in progress. Verify the package exists on the feed and try again. —> RemoteException wrapping