I tried that you said for the path, it's still not working, but I just saw that all my folder and under folder is in reading-only. I cant change it now but it's probably a part of all the last problem I meet I think.
Ok the problem must be in my dds plugin because the right screenshoot use the pure DXT5 format.
I will try to reinstall all photoshop and dds plugin when i will have time. Thank for your help Norbyte.
