UI Libraries are read only and cannot be created

[Foxtrek_64 (Devin Duanne)]

Hi all,

I’ve been actively working on a project for some time. We keep adding activities over the course of several months.

Last night I closed out of Studio at the end of the day and today I reopened Studio. First thing I noticed is that my project seemed to have a bunch of build artifacts in the project root, mostly expression dlls. When I opened one of the files I had been working on prior, I noticed that activities with bodies like foreach, if, check state, etc. have all been replaced with collapsed activities that cannot be edited and do not appear to have any properties.

It also appears as though, while I can edit the workflow to add in some basic activities, every activity related to UI automation has been removed. For instance, I can’t find even the Click activity. This project is using Modern UI, but I’ve enabled searching for Classic activities as well. As you can see, the click activity just simply doesn’t exist.

I have seen projects behave this way when downloaded from Orchestrator, but this project has always lived on my hard drive.

I have a couple questions here:

1. What happened to my project to put it into this state?
2. Is it possible to revert this project into its previous, editable state?

[Anil_G (Anil Gorthi)]

@Foxtrek_64

Try to reopen

Or change the system and ui package versions

Cheers

[Foxtrek_64 (Devin Duanne)]

Seems the UiPath.System.Activities library reference was lost somehow. I’m not sure why this would happen, but adding that package reference manually resolved the issue. Normally I don’t know NuGet to be that finnicky, but there may be something weird with UiPath’s implementation or something.

Either way, thanks for the help!