Newbie - probably non-standard installation - where to go from here

No it won’t. There is another thread about that. (emonSD-17Oct19 Image partition sizes - #6 by borpin) The only solution is to include the changes and install from the Scripts directly.

It looks like you had a bad flash.

I’m not an expert on emonhub so cannot really help there. Have you searched the forum?

Posting the current emonhub.config will help.

Please put 3 ‘backticks’ ``` (top left of keyboard) on a line before and a line after to format code.