Index: trunk/ppStack/src/ppStackConvolve.c
===================================================================
--- trunk/ppStack/src/ppStackConvolve.c	(revision 28253)
+++ trunk/ppStack/src/ppStackConvolve.c	(revision 28560)
@@ -192,4 +192,13 @@
             return false;
         }
+        if (!pmCellWriteCovariance(options->convVariances->data[i], readout->parent)) {
+            psError(psErrorCodeLast(), false, "Unable to write convolved covariance %d", i);
+            psFree(fpaList);
+            psFree(cellList);
+            psFree(rng);
+            psFree(target);
+            return false;
+        }
+
 #ifdef TESTING
         {