The previous Transmissivity and Total-Internal-Reflection patch has been updated to fit the new line numbers found in the post-Orange cvs HEAD. https://projects.blender.org/tracker/?func=detail&aid=3675&group_id=9&atid=127 http://mediawiki.blender.org/index.php/BlenderDev/Transmissivity -- [ e d @ h a l l e y . c c ]