Grass/Fog Bug.

I’ve tried to make a posing screenshot by using fakefactory maps. I’ve used materials, models, particles, and shaders so I won’t end up having broken maps and what not.
But strangely, the grass became overlapped and the fog is not working correctly then it used to, any advice?
[Screenshots of Bugs]

http://images.akamai.steamusercontent.com/ugc/250335688565901570/B87A6BA914791D6EE4449DF55DB258B240D1B6D2/

http://images.akamai.steamusercontent.com/ugc/250335688565902502/3ECA6B6D13F164BAE94AF319C1B6EE84CE4E1025/

[/Screenshots of Bugs]

Anyone?