DearAman Said:
"Finder Non Responsive and wont relaunch: Thank you for you reply TheLittles... However, after much effort given, I have not been able to resolve the issue, even having follwoed all yuour suggestions. Sorry I replied late, because I've been on the road.”
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You are welcome.
Getting Finder to Operate Proficiently:
Reinstall the macOS:
Out and about, I’m a little behind in these forums myself this week(so, not as much participation). Anyhow, I would say that you need to reinstall the macOS — Nothing would be deleted. It's just that items that have become corrupted or deleted, would be replaced or reinstalled back to where they should be, reactively. Go Here: How to reinstall macOS from macOS Recovery - Apple Support.
Important: Be certain to create a backup of your Mac prior to performing the reinstall. That way, you can have something to restore the Mac from, should anything go wrong with the reinstall. Once reinstalled, try this once more, seeing if you still get this error.