Added a catch for NC_EINVAL errors on file opening (in this case, try…

… plain netcdf before giving up and throwing a total error). This addresses the runtime error in test ERP_Ln9.f19_f19.FW5.yellowstone_intel.cam-outfrq9s

src/clib/pio_file.c

@@ -65,7 +65,7 @@ int PIOc_openfile(const int iosysid, int *ncidp, int *iotype,
     mpierr = MPI_Bcast(&(file->iotype), 1, MPI_INT,  ios->compmaster, ios->intercomm);
     mpierr = MPI_Bcast(&(file->mode), 1, MPI_INT,  ios->compmaster, ios->intercomm);
   }
-  
+
   if(ios->ioproc){
 
     switch(file->iotype){
@@ -113,7 +113,7 @@ int PIOc_openfile(const int iosysid, int *ncidp, int *iotype,
     // If we failed to open a file due to an incompatible type of NetCDF, try it 
     // once with just plain old basic NetCDF
 #ifdef _NETCDF
-    if(ierr == NC_ENOTNC && (file->iotype != PIO_IOTYPE_NETCDF)) {
+    if((ierr == NC_ENOTNC || ierr == NC_EINVAL) && (file->iotype != PIO_IOTYPE_NETCDF)) {
         if(ios->iomaster) printf("PIO2 pio_file.c retry NETCDF\n"); 
 	// reset ierr on all tasks
 	ierr = PIO_NOERR;