Index: trunk/Ohana/src/getstar/src/dvoImageExtract.c
===================================================================
--- trunk/Ohana/src/getstar/src/dvoImageExtract.c	(revision 28241)
+++ trunk/Ohana/src/getstar/src/dvoImageExtract.c	(revision 29001)
@@ -32,4 +32,8 @@
   // convert database table to internal structure
   images = gfits_table_get_Image (&db.ftable, &Nimages, &db.swapped);
+  if (!images) {
+    fprintf (stderr, "ERROR: failed to read images\n");
+    exit (2);
+  }
   
   matches = SelectImages (argv[1], images, Nimages, &Nmatches);
Index: trunk/Ohana/src/getstar/src/dvoImageOverlaps.c
===================================================================
--- trunk/Ohana/src/getstar/src/dvoImageOverlaps.c	(revision 28241)
+++ trunk/Ohana/src/getstar/src/dvoImageOverlaps.c	(revision 29001)
@@ -35,4 +35,8 @@
   // convert database table to internal structure
   dbImages = gfits_table_get_Image (&db.ftable, &NdbImages, &db.swapped);
+  if (!dbImages) {
+    fprintf (stderr, "ERROR: failed to read images\n");
+    exit (2);
+  }
   
   // for (i = 1; i < 2; i++) {
Index: trunk/Ohana/src/getstar/src/dvoImagesAtCoords.c
===================================================================
--- trunk/Ohana/src/getstar/src/dvoImagesAtCoords.c	(revision 28241)
+++ trunk/Ohana/src/getstar/src/dvoImagesAtCoords.c	(revision 29001)
@@ -55,4 +55,8 @@
     // convert database table to internal structure
     dbImages = gfits_table_get_Image (&db.ftable, &NdbImages, &db.swapped);
+    if (!dbImages) {
+      fprintf (stderr, "ERROR: failed to read images\n");
+      exit (2);
+    }
   }