"LOGIC PRO X: Disk is too slow or System Overload. (-10010)" This is the message that I was having since two weeks ago with my Logic 9. I updated two days ago to Logic X and I am still having the same problem.
I recently formatted my computer. In other words, I'm not using too much memory of my HD. My Memory Ram is 8GB.
Logic Pro X, OS X Mountain Lion (10.8.4)