I am unable to load the program successfully as well. I get the splashscreen come up, but it just sits there and doesn't do anything.

I'm on Windows 7 Pro 64bit with Java 7 and local admin rights.
I have uninstalled, CClean'd my machine and tried again with same results.

I can see the SweetHome3D.exe*32 process running in my Task Manager, but it doesn't show up in the Applications list.

Any ideas?