Cannot refer to an instance member of a class from within a shared method or shared member initializer without an explicit instance of the class

[Zoltan (Zoltan Toth)]

Hello UiPath Community,

I recently upgraded the studio to 2022.10.3 and converted one of the projects to VB, Windows from VB, Windows Legacy.

After the successful conversion, studio analyzed the project and found a dependency which is not available anymore, it is one of the Microsoft activity the Workflow Manager activities v1.0.1.
I successfully uninstalled the dependency and replaced the single activity which was the IsFalse activity to CheckFalse activity from the UiPath.Core.Activity.

Also removed all unused imports from each workflow and done a project analyse which resulted without error.

After all this if I try to Debug Run the workflow in which the IsFlase activity was,
the project wont compile at the start of debug run results in compilation failed.

Error Message does not give much of a hint:

Unexpected error has occurred during the library compilation process:
The assembly compilation returned the following errors:
 * Cannot refer to an instance member of a class from within a shared method or shared member initializer without an explicit instance of the class.
 * Cannot refer to an instance member of a class from within a shared method or shared member initializer without an explicit instance of the class.

Does anybody hade this type of issue after project conversion?

Thanks, Zoltan

Error Screenshot:

[system]

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[Zoltan (Zoltan Toth)]

After digging around in source i managed to get a more elaborate error description.

22.10.3+Branch.master.Sha.def2351dc828ccfbcddb6e9e07c9cf71b5bf55da

Object reference not set to an instance of an object.

Error: System.Exception: Object reference not set to an instance of an object.
   at System.Activities.Presentation.View.ImportDesigner.OnReferenceUpdated(Assembly assembly, Boolean isAdded)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler), HResult -2147467261