shadows and textures problem

since the last update, i've a problem with the shadows on some textures, in my map mod "atoll"
http://www.beamng.com/threads/atoll.22104/

View attachment 140638
as you can see, there is a lot of black horizontal line not beautifull
textures in jpg or png
only those who are on a horizontal plan. some textures works , some other no ...

it is someone for help me ?? how correct this, please?

((in the doubt, we have tried to clear the cache, but that does nothing. just erase the...

shadows and textures problem