I'm on a MacBook Pro using OSX 10.8.3.
Just downloaded WebStorm, dragged it to my Appications folder. When it starts I get the license screen, so I choose 30 day trial. After that, all I get is a single WebStorm menu item -- nothing else. No windows, no errors, nothing. Technically, it's running, but there are no windows, nothing. I tried rebooting.
I don't get it, I have IntelliJ and that works.