I'm back from a short trip now, so I'll be checking in with the forum fairly often.
Good idea about the regional blocking of sites. I'll do that soon.
I *think* I've got the most common error message pop-ups disabled in auto mode now, with the new version (11.5.1). I suspect the main source of errors may have been with near-coastal sites when the wind was coming off the water, and there were no surface reporting sites upwind. Let me know how it goes.
Tom