okh and mohican, thanks for your feedback. This is encouraging even if I had a report about a regression under Mint 18 where the beta crashed (but fortunately, the executable Jar with [font=courier new]-Dcom.eteks.sweethome3d.j3d.version=1.5.2[/font] option worked).

mohican, imported furniture and textures are stored in the [font=courier new].eteks/sweethome3d[/font] folder of your user folder, that's why they are still in the catalogs of Sweet Home 3D when you switch to another version.