Thank you for this information.

One last thing if you're ok:
Could you try older versions of Sweet Home 3D available at http://sourceforge.net/project/showfiles.php?group_id=152568&package_id=245525 , like version 1.8 http://prdownloads.sourceforge.net/sweethome3d/SweetHome3D-1.8-windows.exe
Maybe they fail also on your computer...