phpStorm gray window

Hi,

does anyone has an idea why phpstorm only shows a gray screen with jre and jdk6 on archlinux with awesome WM?

Here's an screenshot
http://cl.ly/0Z2F0I1C362J1T452A2I

If i click randomly on that gray rectangle, it triggers some actions like "Please specify a path to the browser"


Thanks for your answers or tipps, how i can solve this