yup i had that too and I also had a problem when assigning multiple shaders, where they get assigned to all parts of the model , not just the bit you are trying to assign it to. So if i apply a skin shader to the head, that gets assigned to the body also.
Vassago - It sounds like the problem you're describing is related to paths not being correct for texture maps. Does sample_animated_color.SFX work correctly for you? That one doesn't use textures. Try loading up sample_fresnel_term.SFX and assign it to an object. Then select the texture map node and in the settings, browse…