Workflow Designer encountered problems with your document [Object reference not set to an instance of an object]

workflow
error

#1

I encountered a problem with one of my .xaml files when I updated to version 2016.2.6379. When I try to open it UIPath tells me:

Most suggestions I’ve read includes updating and installing packages, but that doesn’t seem to work. Interestingly, as this file is a part of a larger project, the robot still works as it did before the UIPath update, and it doesn’t seem like there is anything wrong with the file other than that it won’t open. When I close the file again I’m given a UIPath Studio Error message, which “Copy to Clipboard” option gives me:

Object reference not set to an instance of an object.

System.NullReferenceException: Object reference not set to an instance of an object.
at UiPath.Workflow.Designer.DesignerAddIn.Close()
at UiPath.Workflow.ViewModels.MainViewModel.CloseDocument(DockingWindowsEventArgs args)

Any suggestions will be much appreciated.


#2

Even I am facing the same issue