OK, that was weird. My events calendar pro plugin was totally missing! (and yet only the recurring events function was affected?)
Anyway, re-downloaded and installed, and all seems good now. Thanks.
Something I found out that may help with future troubleshooting… I was making the modifications to the files and saving them in with other files in my child theme directory. Everything worked fine when placed in the original theme directory. So,… apparently it’s a no-work to save in child folder.
Cheers for all that.
Has anybody offered to share their css files or other custom files? I know that some other plugins have an active “custom skins” community and it seems like that would be welcomed here to.