UiPath Stopped Working

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1

Scenario:

During the execution of the process, UiPath stops working with the usual popup Window, “UiPath Executor has stopped working”. Looking on the windows logs I found out an error whose origin is .Net Runtime: in particular the error messages says “System.InvalidCastException
in System.StubHelpers.StubHelpers.GetCOMIPFromRCW(System.Object, IntPtr, IntPtr ByRef, Boolean ByRef)
in Microsoft.Office.Interop.Excel.ApplicationClass.set_SheetsInNewWorkbook(Int32)
in UiPath.Excel.WorkbookApplication.Dispose()
in UiPath.Excel.WorkbookApplication.Finalize()”

The xaml contains a lot of Excel Application Scope (around 20) but they are correctly closed with Close Workbook and the activity is out of the Excel Application Scope’s sequence

Steps to reproduce:

Current Behavior: UiPath stops working

Expected Behavior:End of the Process

Studio/Robot/Orchestrator Version: Studio’s Version 2018 , Orchestrator’s Version 2018 3.2

Last stable behavior:
Last stable version:
OS Version:
Others if Relevant: (workflow, logs, .net version, service pack, etc):

2

Hi @pveneziani1

I search for topics by your error message and filtered by the ones with a post marked as a solution:
https://forum.uipath.com/search?q=System.InvalidCastException%20status%3Asolved

As you can see, the issue can have multiple causes. Could you clarify a bit more what your process is about?

3

the process is quite simple: it opens a lot of excel documents and it uses write o reade range activities. In particular in a sequence, there is a For each activity which contains an Excel Application Scope and a Close Workbook: basically the same document is open and closed continuously. May it be the source of the anomaly?

4

It might be that processes are not cleaned fast enough. Have you tried introducing some delays just to see if it will fix the issue?