Duplicates: T32857
I, and others, using Blender 2.64 and 2.64a on a 32 bit MacBook Pro with 10.6.8, crash upon trying to open. I am enclosing the crash report from the latest crash with 2.64a.
http://www.pasteall.org/36236/text
I had started a thread at another forum as well. You can see others having my experience.
http://blenderartists.org/forum/showthread.php?268491-Blender-2-64-crashes-at-startup-MacBook-Pro-running-10-6-8-32-bit