On Jul 3, 2012, at 22:05, Peng Yu wrote: >> Running it under dtruss should give you the answer, if all else fails. > > Never knew dtruss. Good to know. > > It indeed access /etc/gprc. Shall this problem be corrected in macports? > > 165 open_nocancel("/etc/gprc\0", 0x0, 0x1B6) = -1 Err#2 Yes, that should be corrected.