Index: trunk/ppStack/src/ppStackPhotometry.c
===================================================================
--- trunk/ppStack/src/ppStackPhotometry.c	(revision 21259)
+++ trunk/ppStack/src/ppStackPhotometry.c	(revision 22730)
@@ -149,7 +149,6 @@
     if (!psphotReadoutKnownSources(config, view, inSources)) {
         // Clear the error, so that the output files are written.
-        psWarning("Unable to perform photometry on stacked image.");
-        psErrorStackPrint(stderr, "Error stack from photometry:");
-        psErrorClear();
+        psError(PS_ERR_UNKNOWN, false, "Unable to perform photometry on stacked image.");
+        return false;
     }