My hunch is that Invig does not support the method used to apply the texture to Poser models and/or that your model does not include the information required to apply those maps to the objects, once imported into Invigorator.
The Zaxwerks troubleshooting page says:
At this time, the Invigorator supports UV-style mapping. Projection-style mapping like Spherical, Cylindrical and Planar is not yet supported. If a model has UV texture coordinates in the model file then a texture map can be applied to these models. At this time the file formats that contain UV coordinates are: Lightwave v7, and OBJ. Remember, the UV coordinates have to be created in the host modeler first, then saved into the model file.