Index: trunk/psModules/src/imcombine/pmReadoutCombine.c
===================================================================
--- trunk/psModules/src/imcombine/pmReadoutCombine.c	(revision 11687)
+++ trunk/psModules/src/imcombine/pmReadoutCombine.c	(revision 12651)
@@ -398,8 +398,8 @@
         psListAdd(inputCells, PS_LIST_TAIL, readout->parent);
     }
-    pmConceptsAverageCells(output->parent, inputCells, NULL, NULL);
+    bool success = pmConceptsAverageCells(output->parent, inputCells, NULL, NULL);
     psFree(inputCells);
 
-    return true;
+    return success;
 }