Index: trunk/ppStack/src/ppStackPhotometry.c
===================================================================
--- trunk/ppStack/src/ppStackPhotometry.c	(revision 23602)
+++ trunk/ppStack/src/ppStackPhotometry.c	(revision 23688)
@@ -69,8 +69,14 @@
 
     if (!psphotReadoutKnownSources(config, photView, inSources)) {
-        // Clear the error, so that the output files are written.
-        psError(PS_ERR_UNKNOWN, false, "Unable to perform photometry on stacked image.");
-        psFree(photView);
-        return false;
+        // This is likely a data quality issue
+        // XXX Split into multiple cases using error codes?
+        psErrorStackPrint(stderr, "Unable to perform photometry on image");
+        psWarning("Unable to perform photometry on image --- suspect bad data quality.");
+        if (options->stats && psMetadataLookupS32(NULL, options->stats, "QUALITY") == 0) {
+            psMetadataAddS32(options->stats, PS_LIST_TAIL, "QUALITY", PS_META_REPLACE,
+                             "Unable to perform photometry on image", psErrorCodeLast());
+        }
+        psErrorClear();
+        psphotFilesActivate(config, false);
     }
 
Index: trunk/ppStack/src/ppStackSetup.c
===================================================================
--- trunk/ppStack/src/ppStackSetup.c	(revision 23602)
+++ trunk/ppStack/src/ppStackSetup.c	(revision 23688)
@@ -43,4 +43,5 @@
         psFree(resolved);
         options->stats = psMetadataAlloc();
+        psMetadataAddS32(options->stats, PS_LIST_TAIL, "QUALITY", 0, "No problems", 0);
     }