It happens to me when I tried out WinPatrol, Spyguard and Spyblaster. After deinstalling them it worked again, but right now MC 11.0.72 is very unstable. It crashes and dissapear all the time. It might be my system or that specific version.
Still have Spybot installed.
That's very troubling to hear. I just discovered this morning that my current MC11 has "timed out." I'm now having to resort to MusicMatch's "Music On-Demand" and "Radio On-Demand" to fill my home office with some decent background noise. (I'm testing out their new Music On Demand" service as a possible replacement for Rhapsody.)
But regardless, I would rather be listening to my APE encoded lossless CD's! But I can't, and given all the problem reports I am seeing with this particular build, it looks like I am going to be without my music for a bit.
(I would reinstall MC10, but as I mentioned in another thread, I built a new system recently, and I'm trying to keep the system bloat down to a minimum, at least for a while anyway.)