Several months ago I modeled a ribosome in Visualizer 1.6 and exported a POV Ray file. The render worked beautifully. Now a publisher wants to use the figure but is asking for a change in the color scheme. I revised the structure in 1.7 and exported a POV Ray file. This time the structure renders everything in black. Not only that, but there are fragments of the structure missing. I would appreciate any help you can provide to sort this out. Naturally, the publsisher wants the figure yesterday.

Thanks,

Greg Williams