That is the directory where the source would be if you downloaded the source tarball, and built it with MicroSoft Visual C++. But you got the pre-built DLL so you don't have (or need) the source code. If you've installed the DLL and configured your compiler to find it, give it a try and it should work. Thanks, Ed Ticket Details =================== Ticket ID: CWX-707496 Department: Support netCDF Priority: High Status: Closed