big problem on my server

hi
i’ve my server rust, and i do the uppdate
it’s not problem for that but the server say "unable to find the shader used for the terrain engine. Please include nature/terrain/diffuse shader in graphics settings) and i can join my serv
and i dont find where is the problem :frowning:
excuse for my english i’m french
thank you

Same problem described here since yesterday: http://forum.facepunch.com/showthread.php?t=1466736
Still no answer.

thank you i look that