AutoCAD Civil 3D :: Texture Surface Changed

Some weeks ago I made this drawing for a costumer, which was like this:

When I opened the drawing today it was like this:

As you can see, there are some differences between the two screenshots:

- The texture of the grass changed, now it's les fine;
- The same for the road (you can't see it right now, but it's the same problem as the gras)
- The trees changed, now you can't look 'through' the blocks;
- The color of the cars (blocks) changed, first they had multiple colors, but now they are one (different) color.