Argh, another quirk of Leopard’s PackageMaker made a broken GRASS package. If you installed to first GRASS Leopard package, delete the GRASS-6.3.app in the Applications folder before installing the new one.
“The beast is actively interested only in now, and, as it is always now and always shall be, there is an eternity of time for the accomplishment of objects.” – the wisdom of Tarzan