When you got through creating the texture map in UVmapper did you save the model? If you didn't save the model the texture map wont work. Also in Poser,in the material editor, make sure your assigning the texture to the the right part of the object. Not the preview or something. As far as Tif files goe I've never had any problem with them in Poser4. hope this helps

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"The true sign of intelligence is not knowledge but imagination".

Albert Einstein