Whenever I use a halo (Unity iPhone 1.7), whether the halo is part of a light or a halo component attached to an object, it appears as a square. I change the size and color and the halo still remains a square. This just started happening about an hour ago and this has never happened to me before when using halos. Does anyone know why this is happening or how to fix it?
My guess is that you set up a Halo Texture within the Render Settings menu.
Remove the texture, and your halo becomes round again.