As the title says, "about this mac" won't open. When I go to the apple logo in the top corner and click on "about this mac" it won't open. I think I have lion: 10.7.2 But as you might understand, I'm not sure because I can't open about this mac . Can I find it somewhere in finder (so I could maybe copy the program from another mac)? I checked and repaired the permissions of my SSD. I have a macbook pro 2010.