I have a WPF based test where I have problems editing an existing element using "edit in live version".
It simply wont connect to the process, which is indeed verified running.

The process is listed in the dropdown of available processes to choose from within the edit in live dialogue in test studio.

I did figure out why it refused to connect.

The find expression of the page had been altered by me from something like this:

"myapp v1.123"

to:
"~myapp"

It's funny because, using the tilde '~' was a solution for me to avoid changing the page find expression all the time.
as our WPF bumps the version numbers on each build.
Using ~ fixed this for me.

Only now, I cant "edit in Live" on those elements, unless I change them back to : myapp v1.123