hmmm, could be a couple of things.  First check the main diffuse channel.  It may be set to black and the Lorena texture is connected to the alternate diffuse instead.  If that is it just connect the main diffuse to the texture but make the value zero (so you can at least see texture in preview)

If not, check the rest of the channels for anything weird: specular, ambient, trans, bump.  Disconnect them all from whatever they are connected to and see if that makes a difference.

Maybe try a "Reload Textures" in the render menu I believe.

Gabriel Sabloff
TIRADE STUDIOS