How to deal with SH3T files? What texture images are supported by the texture import wizard of Sweet Home 3D?
To deal with the SH3T files, you need the Texture Library Editor application available on the Sweet Home 3D's forum: http://www.sweethome3d.com/support/forum/viewthread_thread,3502
The file formats supported by the wizard are: BMP, JPEG, GIF, and PNG.
You can see in the image below as well: