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Hi Kara, The "permission denied" failure when running "make check" is puzzling, because it appears that files have already been written in the test directory. Is this "permission denied" failure intermittent, or do you always get the same failures in exactly the same locations when running "make check" repeatedly? Are you running the test with "make check" in a local directory, or is the directory on a file system that is served remotely from a server? If you haven't successfully gotten through "make check" without failures, then "make install" (or "make check install") would not have installed a working ncdump that could be trusted, so the problem with the test failures must be diagnosed first. Also, you may want to try a netcdf-3 snapshot release more recent than version 3.6.2, as some problems with cygwin were fixed in later distributions: ftp://ftp.unidata.ucar.edu/pub/netcdf/netcdf.tar.gz As we say in the FAQ: Another alternative for Windows users who have Cygwin (or some other Unix emulator on Windows) is to download the latest release and build as with Unix. The latest release is tested under Cygwin and passes all tests cleanly. (The latest Cygwin does not yet include F90 support, but the daily netCDF snapshot is now testing with gfortran and g95 on cygwin). To build under Cygwin, follow the Unix build instructions in a Cygwin shell. The --enable-shared option to configure will generate the netcdf.dll. --Russ Russ Rew UCAR Unidata Program address@hidden http://www.unidata.ucar.edu Ticket Details =================== Ticket ID: LJI-411152 Department: Support netCDF Priority: Normal Status: Closed