Sorry, I lost track of this submission. The problem now is that there is some kind of conflict inside the standard include files: stdio.h specifically. You might check with your local aix guru if you have one. I dont think we have an aix machine here, so it is going to be difficult to debug. Try sending me the file /usr/include/stdio.h; I may be able to figure out the problem. =Dennis Heimbigner Unidata Ticket Details =================== Ticket ID: IZQ-213986 Department: Support netCDF Priority: High Status: Open