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Dan- The big problem on snow leopard is with mixing 64bit and 32 bit binaries for fortran. It turns out that g95 produces only 32 bit binaries, and cc produced (by default) 64 bit binaries. There are three solutions: 1. don't use fortran (as you describe in your message) 2. use gfortran and not g95; I am told that gfortran produces 64 bit binaries. 3. force cc to produce 32 bit binaries using the -m32 flag. Unfortunately, you also have to ensure that you are using 32 bit binaries for e.g. hdf5, curl, zlib, etc. =Dennis Heimbigner Ticket Details =================== Ticket ID: XWI-819189 Department: Support netCDF Priority: Normal Status: Open