Today I downloaded OS X Mountain Lion from the Mac App Store. Once it finished, I installed it. It rebooted and came up with the error "Install Failed, Macinstosh HD is damaged and cannot be repaired". Macintosh HD is (and has been) operating correctly, after running tests on it about 1 week ago. But, the worst part is that when I boot into the Recovery Partion of the HD, it will not let me reinstall Lion, it just comes up with the error "Error", no discription. Already called Apple, they could not fix it. Anyone else had this problem? Please help, thanks.