C Code examples -VDS, example 5

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Hello List, I’m having trouble writing C code to access a virtual dataset.  Below is part of example5 from the C library manual.  I am not able to get execution to get to my printf (“d”) statement, with execution hanging in the vds_mmopen statement. I would appreciate any suggestions, Thanks, Andrew   Compiled with VC6 cl example5.c /Ic:\ermapper62\include /link c:\ermapper62\lib\win32\ermapper.lib Windows XP Ermapper 6.3   /**************************************************************** *                                                               * *****************************************************************       example5.c -  ermapper VDS example */   #include "ers.h"   void main( int argc, char *argv[] ) {     DatasetHeader *p_dshdr_src, *p_dshdr_dest;     VDataset *p_vds;     DatasetHeader *p_ds;     int err;     int i;       IEEE8 null_cell;       /* Check user input */       if ( argc !=3 ){         fprintf(stderr,"%s Usage: %s src.ers dest.ers\n",argv[0],argv[0]);         exit(EXIT_FAILURE);     }       /* initialise ERM process engine */     if ( PE_initialise(argv[0]) != ERS_SUCCESS){         fprintf(stderr, "%s Error: Unable to initialise process engine: %s\n", argv[0], ERS_error_text());         exit(EXIT_FAILURE);     }   printf("a");     /* get virtual dataset header */     if ( eg_dshdr(&p_dshdr_src, argv[1]) != ERS_SUCCESS ){         fprintf(stderr,"%s Error: Unable to get dataset header: %s\n", argv[1], ERS_error_text());         exit(1);     } printf("b");     /* copy dataset headers */     cp_dshdr(&p_dshdr_dest, p_dshdr_src);     safe_free(p_dshdr_dest->name);     safe_free(p_dshdr_dest->datafile);     p_dshdr_dest->name = strsave(argv[2]); /*   ERS_fspec_without_extent(&p_dshdr_dest->datafile,p_dshdr_dest->name);*/   printf("c");     /* open VDS */     if ( vds_mmopen(&p_vds, p_dshdr_src, 0, p_dshdr_src->u.ri.nr_lines,          0, p_dshdr_src->u.ri.cells_per_line,          NULL, p_dshdr_src->u.ri.nr_bands, p_dshdr_src->u.ri.celltype )             != ERS_SUCCESS ){ printf("c1");         fprintf(stderr,"%s Error: Unable to open virtual data: %s\n",argv[0], ERS_error_text());         exit(1);     } printf("d");       /* close and tidy up datasets */     vds_mmclose(&p_vds);       /* done */ printf("e"); }