Software :: Xfce 4.6 Image Format - Cannot Open Fallback Icons

I have a lfs system on which I've tried installing xfce, its 75% successful...all runs but thunar, and some icons. I know the problem is somewhere around glib libpng area but don't know where..originally had a problem with /etc/gtk-2/xxx.loaders missing, fixed that but still have the second half, load thunar from console, cannot open fallback icons ... unknown image format i've recompiled glib (2.25.?) same problem, using old ish libpng and libjpeg, everything else is pretty resent. sorry for lack of exact errors etc not at computer at mo, I all have links installed, and when trying to 'display' a image on command line, it gives a view of image as if loaded in a text editor.