I recently created a plumdroid using this tutorial:http://modthesims.info/showthread.php?t=524529#postbitpopover_4375745 . It worked great, except for the glowing area on the face just above the eyes. Anyone have an idea what is causing this? Other people have tried it and not had this issue.

Yup. Ran into the same issue. The glow happens to be the eye(s) of the plumbot head used in the original design showing through the skin for whatever reason. The way around it that I found is when you create the plumbot, before turning it into a plumdroid, play around with the different heads. Atleast one, that I found, is set in a way that doesn't "bleed" through. This has to be the bot used to make the initial template btw, not the bot you intend to keep.

https://docs.google.com/document/d/...nkNBmC7yj4/edit

That is a screenshot of the only head I am 100% sure never shows through. At least for me it never does. Hope this helped.