Entire UI has grey background, icon's included!

[Glimmering Sands]

I build the SL viewer for Mac OSX from Linden provided source.  I do this because I have a few custom changes to the handling of editing scripts which is important to me (I mention this so you will realize that my minor changes are far removed from the UI).  This used to be all good and fine, but as of late it is not.  The problem is with the UI.  All of the boxes are uniform gray and no icons or images appear (I assume they are gray, too).  Needless to say, this does a useable viewer make!  The last version I was able to build which looks normal is:

Second Life 2.5.0 (0) Nov 23 2010 20:10:43 (Second Life Developer)

I have already tried removing my Library/Application Support/SecondLife directory, the Library/Preferences/com.secondlife.indra.viewer.plist file and even moved /Applications/Second Life.app out of the way.  I assume this has something to do with the skinning support they have.  Has anyone else seen this problem before, and more importantly, does anyone know how to resolve this issue?  I would certainly like to be able to upgrade my viewer, but at this point I can only produce viewers with grayness.

All kind help greatly appreciated,

Glimmering

[Opensource Obscure]

I suggest you to ask help in the Opensource-dev mailing list:

https://wiki.secondlife.com/wiki/OpenSource-Dev