is there a script to remove materials from a .cr2 so they don't show up in the material room? 

Quote - is there a script to remove materials from a .cr2 so they don't show up in the material room?

No, you have to edit them out with either a text editor or one of the specialised Poser file editors.
Also don't forget to remove any unused materials from the corresponding OBJ (and possibly MTL) files otherwise they'll reappear (with a random colour).

Thanks nruddock,
I used a bone structure from one of my models in the setup room on another model I made and the material zones were transferred to the new figure.

I deleted these material zones in the .cr2 and they do not show up in the material room.  But when i load the object that the material zones were removed from I get a window saying "}" cannot be found.

The Poser Pocket Knife has the delete surplus materials tool that you require.

pap, dimension3d also has got some scripts which are usefull with materials room chores.

Do you mean remove the material zones , or just set the texture back to a basic white ?   I have a script somewhere to clear materials  or you can just do one manually and use the Apply to All option in the material room pulldown , top right.

Thanks to all for the info
Pappy