Now, the web version says:

3D Error
Sweet Home 3D will exit now because of a fatal error in 3D rendering system.

Regards,

Oak

Resolved the web start issue:

# su
(or sudo)
# ln /usr/lib/jvm/java-1.6.0.u1-sun-1.6.0.u1/jre/bin/javaws /usr/bin/javaws

...and then run:

javaws http://sweethome3d.sourceforge.net/SweetHome3D.jnlp

...and it works!

The original javaws had 0kb size. That was probably the problem ...

Both the web version and installation does not work for me:

Web:
http://sweethome3d.sourceforge.net/SweetHome3D.jnlp does not have execute permission ... please fix

Local installation on OpenSUSE 10.3:
@linux:~/Sys/Install/SweetHome3D-1.2> ./SweetHome3D
java: xcb_xlib.c:52: xcb_xlib_unlock ...