Attached Link: http://www.renderosity.com/messages.ez?ForumID=10139&Form.ShowMessage=856231

The Poser5 P4 render works with .bum and .jpg files, firefly uses only jpg files. Anthony Appleyard wrote a utility to convert .bum back to .jpg, this works quite good if you don't have the source .jpg.

Convert the .bum files, edit the MAT files and regain many megabytes HD space. ;)