While we have not done exhaustive tests, when this library is updated we get this error log when using the main activity from our library. Testing has lead us to narrow it down to the 25.10.16 version update being the origin. I think the Studio version might have something to do as well but I am unsure about that. This is half a report and half a plead for help.
this error due to incompatibility with the current Studio version or missing dependencies. Ensure Studio and all related packages are updated and the official feed is added.
Check also:
If helpful, mark as solution. Happy automation with UiPath
From what you’ve described, it looks like the issue started right after moving to library version 25.10.16. A couple of things you might want to check:
Sometimes new versions introduce breaking changes, so it’s worth going through the release notes for 25.10.16 to see if anything stands out.
The Studio version could also be part of the problem — the new library might require a specific version or dependency. Which Studio version are you running?
Can you share more details on the problem? the project?
The InteractionMode property was switched to an InArgument<NChildInteractionMode>, which may cause existing libraries, compiled with previous versions of UIAutomation to not work properly.
If this is the case, you just need to re-compile the library with UIAutomation 25.10.16.