UiExplorer Not Opening Due To Internal Error

Whenever attempted to access UiExplorer from within a Studio project, a message saying that an error has occurred, and it is not possible to edit any selectors.

When launching the UiExplorer from the Studio panel, it crashes with this error: "An internal error has occurred. It is recommended that you restart UiPath Studio."


  • Upgrade the UiAutomation.Activities and System.Activities to the latest version available and compatible with the Studio version present.

Read about the compatibility matrix.