Hi, I am semi-new to Unity 4, but I have ran into a problem with meshes imported from Blender, from various file types including .blend, 3ds, and fbx. Everything renders just fine, it is just colliders do not work at all. I have tried rigidbodies, meshes, and a combination of the two. I have also tried restarted Unity and recreating the objects. The objects can collide with objects created inside unity, but not each other.
If anyone has an answer to this problem, I would much appreciate it. Thanks in advance!