ok i get try to redo the all materials ,but i have try to delete the first texture in the texture folder and i can't reload my file -> nul pointer error
(i can delete all other textures after the first without problem to reload ...)
(i use the last editor version 1.1.459.1)
Note : i have change the texture at the first texture in list and don't have error to reload it ...
Edit : i have try to redo the all materials (first create the news and after delete the old.. i can't delete the old before...) and i have nul pointer error ...