This post has been marked by the post author as the answer.
I totally sure.
Additionally I realize that all my files are stored on steam cloud servers, that means, when I reinstall the GG app all my files are restored from there, so, it is not possible to do a clean installation. I think this because I desintalled and check that the folder was deleted. I reinstall again and all the folders were created again included also my own personal models files!!!
Finally I fixed it. The issue was regarding the image file names. One software changed the extension of the image files and put them in uppercase instead lowercase, (maybe Steam),