Raycast not hitting terrain.

So I have a terrain with a terrain collider attached and is trigger is deactivated. When I place an object just above it and try to raycast downwards ( checked if ray is penetrating by drawing the ray) it won’t register the hit. I am using 4.5.1f3 free version and have no options to try. Any suggestions ?

Figured it out, something to do with a processing script and the prefab it creates. It is still weird that you can have a terrain object that is not hittable with a raycast, thanks for help.