Index: /trunk/psModules/src/concepts/pmConceptsRead.c
===================================================================
--- /trunk/psModules/src/concepts/pmConceptsRead.c	(revision 9696)
+++ /trunk/psModules/src/concepts/pmConceptsRead.c	(revision 9697)
@@ -257,6 +257,6 @@
     pmHDU *hduLow = pmHDUGetLowest(fpa, chip, cell); // The HDU at the lowest level
     if (!hduLow) {
-        psError(PS_ERR_UNKNOWN, true, "Can't find HDU at lowest level");
-        return false;
+        // We read the defaults for all the HDUs we could find
+        return true;
     }
     pmHDU *hduHigh = pmHDUGetHighest(fpa, chip, cell); // The HDU at the highest level