Materials dissapear when d5 render is opened or sync with revit

Hi people, i have a problem with d5 render, all the materials dissapear when i opened or sync from revit. I’ve been looking here if there are some topic similar but no one explain well what to do in this case. this problem hapened when I actualize the d5 render to 2.4, before of this it was working very well and now all the material dissapear. if anyone know what to do in this case and explain me i’ll be aprecieated. all the material from revit dissapear and i’m stuck in this situation. I need to fix this problem as soon as posible. it seems that the d5 render is not reading the location of the material.
I’m uploading an image with the problem.

Having the same problem with Archicad. When i open D5 it resets materials to white default if the material havent been changed since assigning it in archicad. Also different materials become the same i D5 so i cant seperate and change them.