hi Tinker, this may sound stupid but the fact that u don't see them it does not mean they are not there.
Make sure there is no mesh between you and the helper point so you always have a direct line of sight, never add the halo in the middle of the light, always a bit over or under it. sometimes if you are too close to the halo or there is too much light in the room you are not going to see them either.
Hope that helps, well u already fixed it so...
j.