... kind of! I need help, please! I was trying to do a clean install of ML on my MacBook 5,1 (late 2008) and when I boot it up from an external HDD it goes straight to the part where it tries to install the OS X (that big window with the big X and the progress bar on the bottom). It stays there for a few seconds and then I get the following message: "There was a problem installing "Mac OS X". Try reinstalling." I rebooted already a dozen times. Used the Disk Utility to verify both the HDD where ML will be installed (which as been correctly formatted and is now empty) and the attached external HDD which contains the installation dmg of ML. I'm out of ideas now. What the hell is going on? My MacBook 5,1 supports ML, right? I checked the dmg installation file of ML before and it check out in Disk Utility. Hope someone can help! Thanks a bunch!