I've written a plugin by looking at other plugins and it works well on my MacBook.
I've tried to install it on my desktop. It says it's successful, but the icon never shows. Starting calibre-debug -g shows it loading successfully, but no icon.
So, I removed Calibre and did a find and delete of anything with calibre in the name in /Library and ~/Library and tried to install
https://calibre-ebook.com/downloads/...emo_plugin.zip but that doesn't work either.
Help! :-(
PS I've tried 3.40.1 and even downgrading to 3.34.