I wasn't having any issues two days ago (on June 28). But now and for the past five hours, I've been getting the 4010 error. I've tried restarting iTunes and my computer; I've tried shutting off iTunes Match and restarting. But the error keeps popping up.
The odd thing is that it was working fine and then suddenly stopped. I successfully matched about half a dozen songs, and then the error message kicked in. Even more odd is that the songs that were originally matched (and clearly made it into the Cloud as they show up on my iPhone) now have a "waiting" status in iTunes on my laptop.
Has anyone found a fix? Or am I just supposed to wait it out?...