I would very much like to know if you succeded in deleting materials from the materials list. This matter has been dicussed before and as far as I know the inability to do this is considered a bug in poser. When merging two figures you are bount to end up with double materials, or am I wrong? The materials you find in the group editor's pop-up under -add-materials - are the real ones. These materials are the bridge to the texture maps when connected in the material room.The rest can not be deleted but they do no harm.