Index: trunk/pswarp/src/pswarpDataLoad.c
===================================================================
--- trunk/pswarp/src/pswarpDataLoad.c	(revision 12771)
+++ trunk/pswarp/src/pswarpDataLoad.c	(revision 13109)
@@ -60,5 +60,9 @@
     }
     if (bilevelAstrometry) {
-        pmAstromReadBilevelMosaic (input->fpa, phu->header);
+        if (!pmAstromReadBilevelMosaic(input->fpa, phu->header)) {
+            psError(PS_ERR_UNKNOWN, false, "Unable to read bilevel mosaic astrometry for input FPA.");
+            psFree(view);
+            return false;
+        }
     }
 
@@ -74,8 +78,16 @@
         pmHDU *hdu = pmFPAviewThisHDU (view, astrom->fpa);
         if (bilevelAstrometry) {
-            pmAstromReadBilevelChip (chip, hdu->header);
+            if (!pmAstromReadBilevelChip (chip, hdu->header)) {
+                psError(PS_ERR_UNKNOWN, false, "Unable to read bilevel chip astrometry for input FPA.");
+                psFree(view);
+                return false;
+            }
         } else {
             // we use a default FPA pixel scale of 1.0
-            pmAstromReadWCS (input->fpa, chip, hdu->header, 1.0);
+            if (!pmAstromReadWCS (input->fpa, chip, hdu->header, 1.0)) {
+                psError(PS_ERR_UNKNOWN, false, "Unable to read WCS astrometry for input FPA.");
+                psFree(view);
+                return false;
+            }
         }