Got it working again.
Created another fresh clone for this module (zones4), tested it locally and it works as expected - all good.
All I can put this down to is a corrupted FTP transfer when I first uploaded all the new/modified files to the server after the upgrade was completed locally.
After that my usual practice is to zip up my local upgrade file set and then delete all files locally. Then I usually download a complete live site mirror so I have exactly the same file system locally as I have it on the live store, so the 2 sets were identical but for the 2 configure files.
After creating a new clone and testing it locally to satisfaction, the newly created clone (zones4) now runs ok on the live site.
A rare incident, I know, but sometimes you-know-what
happens! Just cost me a bit more hair-loss.........
Thanks again to all for taking the time and assistance.
Cheers / Frank
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