Question About Thick Black Lines Across Grass.

I have a problem here I was hoping someone could help me fix. I have started to spawn grass on my terrain and after I spawned it all I realized it was leaving thick black lines everywhere the grass was all running the same directions. The lines are there whether lighting is on or off. Is this a problem with the grass, lighting or a combination of the two? Thank you.






Never mind, I fixed the problem. The Advanced Foliage Shader was giving a problem. I deleted and it works fine now.