Hello
I installed from the software center, I also downloaded SweetHome3D-5.7-linux-x64.tgz, unpacked and tried to open the file SweetHome3D or SweetHome3D-Java3D-1_5_2, but nothing.
Do I have to install any version of java? which?

I do not know English, what does craphiccard mean?

let's keep up to date
good evening