Issue on invoking C# code - "No compiled code to run error"

In my UiPath bot, I am invoking one C# code where its executing some of the functionalities of iTextSharp package, the bot is dealing with pdf and doing some activities.

But it is throwing error of “No compiled code to run error CS1704: An assembly with the same simple name 'TelemetryClient, Version=, Culture=neutral, PublicKeyToken=null has already been imported. Try removing one of the references or sign them to enable side-by-side. At line -33”

Any idea on what is the issue ?

The iTextSharp library has already been uploaded to Orch.

Hello @Debartha_Mitra_DE!

It seems that you have trouble getting an answer to your question in the first 24 hours.
Let us give you a few hints and helpful links.

First, make sure you browsed through our Forum FAQ Beginner’s Guide. It will teach you what should be included in your topic.

You can check out some of our resources directly, see below:

  1. Always search first. It is the best way to quickly find your answer. Check out the image icon for that.
    Clicking the options button will let you set more specific topic search filters, i.e. only the ones with a solution.

  2. Topic that contains most common solutions with example project files can be found here.

  3. Read our official documentation where you can find a lot of information and instructions about each of our products:

  4. Watch the videos on our official YouTube channel for more visual tutorials.

  5. Meet us and our users on our Community Slack and ask your question there.

Hopefully this will let you easily find the solution/information you need. Once you have it, we would be happy if you could share your findings here and mark it as a solution. This will help other users find it in the future.

Thank you for helping us build our UiPath Community!

Cheers from your friendly


Were you able to resolve this issue? Could you please help us with the solution. I am facing the same issue.
We just upgraded UiPath version to 2020 and now it has started giving error.

yes, if you are invoking some code written in C# please convert it into VB.Net and it will work.

For me, it worked after downgrading the UiPath.activities package to 2019 version.

thats cool, we don’t have option to downgrade our studio so I have changed the code to VB.Net

No… We downgraded the package version (uipath.activities package)

Many Thanks.

Shubham Agrawal