Combine Children script makes roads invisible

I created an empty game object, and parent all my road segments into it, and apply the script. However, upon playing the roads disappear. There are different road shapes, but they share the same material. The same thing happens when I do it with the traffic lights. They disappear, however the box colliders still work. How do I fix this?

try disabling static batching option introduced in unity 3.0

When I uncheck “Static”, it does make the roads appear. However, the lightmap is now gone.

I think I’ve read there’s a vertex limit with combining children and batching?

There is a 65k vertex limit on any mesh.
If you go over the limit, some of the mesh still appears on screen. But its a bit messed up looking.


That blue area on the right should be green, but it got sucked over to the left, to make a mess.

This isnt Bryan’s problem, sorry I have no clue, I havent been using Static.