For example, the Sweet Home 3D types recognized by the operating system are sh3p (plugins), sh3f (furniture) and sh3l (languages). The sh3t type (textures) is not recognized as a Sweet Home 3D type.
By clicking Help -> About... -> Libraries... , you can only see the list of plug-ins recognized by Sweet Homme 3D even though many more are installed.
As Emmanuel Puybaret suggests, it can be useful to do a little cleaning by removing all plug-ins starting with PhotoVideoRendering or PVR especially if you have installed test versions.
Follow this method for installing the plug-in:
[*]Download the latest version
[*]Open the PhotoVideoRendering-xxx.zip compressed folder
[*]Double-click on the PhotoVideoRendering.sh3p file
(If you use the portable version of SH3D, put the .sh3p file in the data/plugins folder)
Sweet Home 3D then displays:
[*]either a first installation message
[*]or a replacement message
click on Replace
Hoping that it will be useful to everyone!