Java Web Start application shows empty window on XMonad

Question

I use XMonad+gnome as window Manager. I have the problem that, when I run a Java Web Start applicacion, It olways show an empty window, like the screen:

Is there something I can do to fix it?

UPDATE:

I tried simple programs from JWS Examples and it works, right. So it should be a problem of the application.

The failed aaplication is Blast2Go.

Answer 1

Change the name of the window manager to a known one like LG3D:

startupHook = setWMName "LG3D"