I'm giving this plugin a try for some common actions I do, usually to change a couple of metadata values (that I have now in one of my plugins, but I can clean them, perhaps). I'm using calibre portable 5.5 on Windows 10 and I have a couple of problems:
- Shorcuts for chains are not working for me (they don't appear in the menu till I restart calibre and, when they appear, they don't work)
Edit: Second point removed, there was a problem in my column definition.