Index: /trunk/psModules/src/imcombine/pmSubtractionMatch.c
===================================================================
--- /trunk/psModules/src/imcombine/pmSubtractionMatch.c	(revision 14679)
+++ /trunk/psModules/src/imcombine/pmSubtractionMatch.c	(revision 14680)
@@ -223,4 +223,8 @@
             stampsData = psVectorsReadFromFile(stampsName, "%f %f %f"); // Stamp positions
         }
+        if (!stampsData) {
+            psError(PS_ERR_IO, false, "Unable to read stamps file %s", stampsName);
+            goto ERROR;
+        }
 
         // Correct for IRAF/FITS (unit-offset) positions to C (zero-offset) positions