Hey !
I installed Calibre 5.9.1 , 10 minutes ago..and pff... plugin was uninstalled.
Now, I have the same error as Greyhunter has.
Code:
'ascii' codec can't decode
davidfor : My calibre language is french, so I tried to set it to English... then no error to install the plugin, and it seems to work good.
Then I get back to French.. and pfff... plugin disappears!
Thanks