Index: trunk/Ohana/src/imregister/src/imphotmerge.c
===================================================================
--- trunk/Ohana/src/imregister/src/imphotmerge.c	(revision 27484)
+++ trunk/Ohana/src/imregister/src/imphotmerge.c	(revision 27485)
@@ -113,5 +113,5 @@
   }
   Nimage += Nin;
-  gfits_modify (&header, "NIMAGES", "%d", 1, Nimage);
+  gfits_modify (&header, "NIMAGES", "%lld", 1, (long long) Nimage);
 
   /* position to begining of file to write header */
@@ -152,5 +152,5 @@
   /* check that file size makes sense */
   Nimage = 0;
-  gfits_scan (header, "NIMAGES", "%lld", 1, &Nimage);
+  gfits_scan (header, "NIMAGES", "%lld", 1, &(long long *) Nimage);
   if (fstat (fileno(f), &filestatus) == -1) {
     fprintf (stderr, "ERROR: failed to get status of image catalog\n");