I rebooted my computer and tried to start the client, at which point the only thing that would pop up was an error message that said "Last.fm has stopped working." I uninstalled and downloaded the application again, and when I ran it, I got the same message.
I'm about to just say forget it. It's more trouble than it's worth these days.
I'm about to just say forget it. It's more trouble than it's worth these days.