Hi Guys, I'm hoping someone can help with this. I'm running a Macbook Pro with Mountain Lion and recently put in SSHD Hybrid drive. I did a clean install and moved all my files over from my external drive. Everything was running smooth until after a few days when all of a sudden I couldn't take screenshots or delete files (error code -50), or even access Skype or itunes. When I reboot, the problem goes away, but then comes back again after a while. So I reformatted a second time, did another clean install. But it's happening again. Can anyone help shed some light on this?? I work with photoshop and music and I'm unable to do any work this month Thanks in advance.