Did you try to run/open by clicking Launch Sweet Home 3D with Java Web Start from the download page? Provided you run a fairly recent version of Java, this should give you version 4.2a. If I understood the previous thread correctly, 4.2a has a fix to address you kind of issue. (And I assume there may be a full release at some point).

If you cannot run the Java Web Start version either, some info about your system (OS, Java version) would be useful if anyone is to comment.

ok