I've followed the suggested method, but unfortunately, the issue remains.
I performed a clean reinstall, downloaded LiveUpdate, and restarted twice to allow the cache to build. I'm familiar with giving it plenty of time, especially since I have a fairly large scenery library, but I left it running for over an hour today with no change.
I'm still seeing the exact same screen as shown in the screengrab below and when selecting a service, it does not give a choice of hander, it defaults straight to the generic one. Everything was working well before Version 3.5.3—could something in that update have caused this issue?
Thanks in advance!