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Hi Robert, OK, I have a working hypothesis for what is happening on your machine. First an observation: - your ~mcidas/mcidas2009/netcdf/config.log looks just like mine ... good Given this observation, I believe that the netCDF build in the McIDAS distribution _is_ 32-bit as it should be. Please test this as follows: <as 'mcidas'> cd ~mcidas/mcidas2009/netcdf/ncdump file ncdump The output from this run on my development machine is: % file ncdump ncdump: ELF 32-bit LSB executable 80386 Version 1 [FPU], dynamically linked, not stripped Now the hypothesis: - I believe that 'make' is using a netCDF library (static or shared) that is different from the one built with McIDAS. This would happen, for instance, if the netCDF library(ies) were installed in a system library directory since that library would be used in preference to the one in the ~mcidas/mcidas2009/netcdf/libsrc directory. - OR, your system might have been configured set the library search path (LD_LIBRARY_PATH) to search the directory in which a 64-bit netCDF library was installed. If my hypothesis is correct, you could remove/rename the netCDF library installed wherever it is being found so that the one in the McIDAS build gets used. Cheers, Tom -- **************************************************************************** Unidata User Support UCAR Unidata Program (303) 497-8642 P.O. Box 3000 address@hidden Boulder, CO 80307 ---------------------------------------------------------------------------- Unidata HomePage http://www.unidata.ucar.edu **************************************************************************** Ticket Details =================== Ticket ID: HIF-234168 Department: Support McIDAS Priority: Normal Status: Closed