While trying to determine what to texture there is a whole slew of duplicate files scattered around even the old files for the <1.5 mods sprite sheets are still in the pack and all GUIs are still not in the mods folder.
Would be really helpful if they could be cleaned up to make things much easier on us.

138e1fc
That should be all or did I miss something.

maybe the 0.png in the solid blocks thats just a pink image and how are fluids drawn now if not by those images?

They are using the icon rendering code from the liquid itself.