UiExplorer: Index was out of range. Must be non-negative and less than the size of the collection


I just updated my Uipath Studio to 2019.10.4. When I try to validate the selector in Uiexplorer and I am getting the error dialog at every time.


But Not that, after clicking OK. It works fine.

Can anyone tell me why this is happening?

Hi @kuppu_samy

check below post

Hope this helps


Thanks @ksrinu070184,

But the post which you quoted is about while indicating an element. For me, it’s works fine when I indicate an element. I am getting an error when I validate the selectors in UiExplorer.