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Mike, I am getting a little confused with all the things that we have tried, so can we try a fresh start? ;-) Untar the netCDF distribution again, and build like this: FC=g95 ./configure --disable-cxx && make check If this works, great. If not, send me the output of configure and make, and the config.log. Note that the above sets "FC" not "F95". When you set F95 you told configure to use g95 for the Fortran 90 API, but not the F77 API. As a result, it built the F77 API with f77, a GNU fortran compiler (and a rather old one), and the F90 API with g95. Try building both with g95 by setting FC instead, which tells configure to use g95 for both fortran 77 and fortran 90 code. Please let me know how this works... Thanks, Ed Ticket Details =================== Ticket ID: MPL-618419 Department: Support netCDF Priority: Normal Status: Open