I noticed that ghostscript didn't work after the last update. Then I found out that some crucial files in the lib directory of ghostscript are removed from the PLIST, files like xlatmap, Fontmap etc. I extracted the source tarball and copied the files to their proper places and gs worked again. You can check the diff of PLIST to see which files are removed, and hopefully fix this issue for everybody else.
best wishes, Onat I.