Index: trunk/psModules/src/concepts/pmConceptsWrite.c
===================================================================
--- trunk/psModules/src/concepts/pmConceptsWrite.c	(revision 7469)
+++ trunk/psModules/src/concepts/pmConceptsWrite.c	(revision 7516)
@@ -225,4 +225,6 @@
         return false;
     }
+    if (!cell->config)
+        return false;
 
     pmHDU *hdu = pmHDUGetLowest(NULL, NULL, cell); // The HDU at the lowest level