vraydirt black areas

[filip]

Hello, my vraydirt vrayextratex renders some faces black, checked they are facing correctly up, could anybody help please?
(all black areas are faces facing up - same issue if I check 2sided in vraydirt parameters - when I turn the normals they render white, but all forestpack objects that use this mesh as distribution surface turn down)

EDIT: unticked invert normal was the solution, thought I tried it first time with no luck...

[Miro]

So, it's all good now, right?

[Morbid Angel]

The black area means the normal of that geometry is flipped.