Strange Rendering Errors (Shading)

[Krallis]

When I plug my normal map into the "phong" node in my shading network it looks fine when hit with direct light, however there appears to be some strange errors when there's no light hitting it. Like big dark splotches that seem to be caused by the normal map. However the normal map itself is pretty good with no glaring errors on it.

Now when I plug the normal map directly into the "main" node in the network these strange splotches disappear, which would be ideal. However the shader doesn't seem to react to lights anymore. At least not any that I've placed.

Anyone know whats up?

(using Softimage XSI 2012)

[Krallis]

Also this demonstrates what happens when the shaders are all plugged into the "main" node. Now, there is a point light in the middle of the tower, however its totally ignored that when calculating the lighting for the scene, it also appears to be using the generic "infinite" softimage light.

[Krallis]

UPDATE: Fixed it.

Turns out you have to use the XSINormalmap3 node plugged into the "main" node. And also with a new CAV property created for it.
Only then will it display properly (or at least the way i was trying to get it to display)