Connector for Safari won't install under OS X El Capitan
With Zotero desktop standalone 4.0.28 installed (and open or closed), the downloaded extension Zotero_Connector-4.0.28-1.safariextz will not install in Safari 9.0.1 under Mac OS X El Capitan 10.11.1. Neither double clicking the download or dragging it into the Safari Preferences > Extensions window seems to do anything -- just opens a blank tab in the browser, and the extension does not appear (not even greyed out, i.e. inactive) in that Extensions pane.
What's wrong? How to fix?
What's wrong? How to fix?
(edited) Never mind. It was already installed. It just won't update.