I confirm the JAVA3D warning is harmless. I have it with all Java3D application running with ATI hardware.
This is a localization problem. The exception stack shows that resource icon#1 cannot be found. The source file com/eteks/sweethome3d/io/DefaultFurnitureCatalog.properties tell that icon#1 is /com/eteks/sweethome3d/io/resources/bed140x190.png. I guess that com/eteks/sweethome3d/io/DefaultFurnitureCatalog_fr.properties (or any other langage) should also contains icon#1. A workaround is to run: LANG= sweethome3d Regards, Jerome