This was a POSER 5 wishlist request from myself. There should be two additional options in the Menu>Render>Materials area: 1) Clear ALL loaded Textures. 2) Clear SELECTED Texture(s) Of course you'll have to be VERY CAREFUL with option 1 :)

"Few are agreeable in conversation, because each thinks more of what he intends to say than that of what others are saying, and listens no more when he himself has a chance to speak." - Francois de la Rochefoucauld

Intel Core i7 920, 24GB RAM, GeForce GTX 1050 4GB video, 6TB HDD space
Poser 12: Inches (Poser(PC) user since 1 and the floppies/manual to prove it!)