A baking issue

It’s been a very, very long while since I had to bake anything so this will probably be a quick fix… But yeah, I’m trying to bake a high poly model onto a low poly one and am getting some odd results. In the top window is the highpoly model (which isn’t particularly high poly really) and in the lower window is the render result of the low poly version with the normal map applied. Not a pretty sight.

Any help is greatly appreciated.