Could not load file or assembly 'UiPath.System.Activities"

When I start a new blank task in Studiox I get the following error: “Could not load file or assembly 'UiPath.System.Activities” or one of its dependencies. The system cannot find the file specified." When I load an existing project that uses UiPath.System.Activities i do not get error.

Anybody that can help to resolve this?

1 Like
  1. Could you please specify the Studio version?
  2. Copy a version of the System package under “StudioInstallDir” / Packages and try again

Thank you for pitching in - the version is Studio X 2021.4.3.

So I have the following system activities file in my package folder in the install directory : UiPath.System.Activities.21.4.0-beta.1503564.nupkg
In the package folder where my local package source is listed in StudioX I currently have a UiPath.System.Activities.21.4.0.nupkg file. Are you saying I should copy the one from my install directory and have both in the local package folder?

Thank you again for your assistance.

Make sure you have the UiPath.System.Activities.21.4.0.nupkg package in the [Studio]/Packages folder, like this: