Hi Kelley, Yes, apparently Xcode 2.3 was missing the crt2.o runtime support initialization, so you did the right thing. Thanks for reporting the solution before we got around to looking at the problem! --Russ Russ Rew UCAR Unidata Program address@hidden http://www.unidata.ucar.edu Ticket Details =================== Ticket ID: DAY-124483 Department: Support netCDF Priority: Normal Status: Closed