From Last.fm:
BADSESSION
This indicates that the Session ID sent was somehow invalid, possibly because another client has performed a handshake for this user. On receiving this, the client should re-handshake with the server before continuing.
At the moment MTP-Lastfm only does a handshake at startup so if amarok or another media player did a handshake it would be rendered invalid. This is an easy enough fix.
From Last.fm:
BADSESSION
This indicates that the Session ID sent was somehow invalid, possibly because another client has performed a handshake for this user. On receiving this, the client should re-handshake with the server before continuing.
At the moment MTP-Lastfm only does a handshake at startup so if amarok or another media player did a handshake it would be rendered invalid. This is an easy enough fix.