Solved.Thanks.
It's Archlinux packet in [Community] that is buggy. Original java packet in SweetHome3D site is ok.

Sorry.... in my aur arch linux sweethome3d package I don't find any java script (there is a .desktop ...). Anyone can publish this script content?

Intel z270, i7-7700K, Linux 4.13 (4.13.8-1-zen), arch linux distro, Sapphire NITRO+ RADEON RX 580 Special Edition 8G GDDR5, amdgpu driver, 16gb ddr4, de KDE. system full updated, Linux-zen kernel.

Extended renderer info (GLX_MESA_query_renderer):
Vendor: X.Org (0x1002)
Device: Radeon RX 580 Series ...

A way to insert dec and hex as code color for items?

Slect roms to print? I have drawn sone near roms to appartment but a way not to print?

Yes. an elegant way to "drive" the print output.

Yes a way reach items in group whithout separate them.
And a way to insert items (and no group) in print?

Software is beatifull, thanks for work )))

An idea to import also .skp items google files?

In printing 3d view, have a photo of current 3d view and after photos from position saved (areal view and also virtual view)? And also insert a Png Photo made?

uau.... beautifull