Heya,
I found that the error:
Code:
ImportError: cannot import name Comicvine
happens when there is still a comicvine.zip in the plugins folder (i.e. /AppData/Roaming...)
- Close Calibre
- Delete comicvine.zip (and the comicvine.json) from the AppData dir
- Start Calibre
- Use the plugin file from the OP
That should do the trick.