I am able to download and get to the point where it says it will restart, then a few seconds later, I get a message that says the installation failed and to try again. The installers log only shows: Jul 26 12:58:40 Robs-MacBook-Pro InstallAssistantTool: Couldn't bless the installation disk: / I did run the trim enabler tool, but otherwise, have really done nothing to tweak the SSD or attempt to do anything else. The install of the SSD was pretty straightforward. I did a fresh install then used migration assistant to transfer the data to the new drive. The MBP is an early 2011 13" 2.3GHz I5 machine. I don't have anything unusual running on this machine.