UnitySteer; Radar Issues

Hi! I am using UnitySteer as part of a game for at student project. What i am doing with it is using it to move packs of planar rats, scare the rats etc. All in all i've got it working pretty well. However!

I cannot get any steering behaviours dependant on the Radar working. Neither separation, cohesion or obstacle repulsion.

All the rats and their respective vehicles have been added to a specific ratlayer, and the radar has been set to check that layer. The same goes for all the obstacles as well. I've tryed setting HUGE weights to obstacle repulsion to try to provoke a reaction, but no difference. So really i am looking for advice to why the radar is not detecting anything.

Any help would be greatly appreciated, if anyone is familiar with UnitySteer.