I'm having the exact same problem on the mac, OSX 10.7.3, totally souped up machine.
I think we are doing something simple wrong, but I can't figure out what it is. I downloaded via one of the mirrors, got rid of my old PS folder, then dragged the new folder to my apps. Ran pslaunch, repaired, did everything I could think of, but still the window crashes after trying to connect to the server.
Thanks for any help. I don't think it's a computer issue.