Read CSV: Method not found: 'Void CsvHelper.CsvParser..ctor(System.IO.TextReader)'

Hi, after upgrading installed packages I cannot manage to get rid of csv error:
Read CSV: Method not found: ‘Void CsvHelper.CsvParser…ctor(System.IO.TextReader)’.

I uninstalled MS.Excel.Activites, restarted UiPath, reinstalled. Problem still exist.
The I added CsvHelper Activity. Problem still exist.

Any advice, how to solve it?

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Hello @VanjaV!

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In summary, packages that you downloaded, may contain dependencies you had already used. And if there are duplicate dependencies, the package with the latest version overrides the older one.


This problem occurs because there is one more CsvHelper package in IntelligentOCR.Activities as you see in the picture.

But this problem only occurs in the 4.9-preview version. If you downgrade to 4.8-preview you will be able to use CSV methods. Also, you can downgrade to stable versions but probably some activities will change so 4.8-preview is fine.


I suggest you should upgrade package ‘uipath.system.activities’ that contains CsvHelper. Or it Could be caused by package collision


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