I got the mac client to build and run on my machine. I used the 07-29-2005 versions of CS and CEL, I used gcc 3.3 instead of gcc 4, and I had to fix a couple of minor errors in planeshift cvs, including the #elif MAC_OS_BLAH error that is still there, despite it being known and reported multiple times for several months and requires changing only one line of code(grr).
One thing though, even after setting PlaneShift.GUI.Imagefile = /planeshift/data/gui/releaselist.xml in planeshift.cfg I still get the old GUI image files when I run planeshift. Also there seem to be missing textures, including the big tower, the laanx temple, and the spear of the statue, all checkerboarded textures.