Poser is not finding the bump map it's looking for. You need to fix the texture references to look for the proper bump maps. Poser 5 does not convert bump maps. Instead, it uses jpg bump maps. Poser 4 can convert jpg bump maps to BUM format. In Poser 5, the bump map should be connected to the bump channel, rather than the gradient bump channel. Mat Pose Edit can fix bad bump map references in MAT Pose files.