Thanks Kovid, I'm getting closer.... The 'how to set env variables' link went over my head so I googled a bit. I added this bit to my .zshrc file:
Code:
export CALIBRE_OVERRIDE_DATABASE_PATH=~/Public/metadata.db
Then at the zsh prompt:
Code:
csd@mbp ~ % $CALIBRE_OVERRIDE_DATABASE_PATH
zsh: permission denied: /Users/csd/Public/metadata.db
Same Calibre error. I don't wish to waste your time, but I'd really love to get Calibre running again (I've learned my lesson on betas now

). Anybody sympathetic to Unix command line novices?