Mesh building changes in Unity 3.5.6

Hi,

i am doing update to app which is already on appstore. Its Fruit Ninja type game and there is mesh generated swipe, it worked without issues, but since the update the mesh is almost not visible. It seems like the uvs are messed up as in Editor it is quite well visible, but at some verts the color disappears. But on Iphone its much worse, its almost not visible at all.

If anyone knows what changes have been done to mesh generation, please let me know. I guess its something with how triangles or uvs are assigned.

Thanks Luke