Index: trunk/psModules/src/concepts/pmConcepts.c
===================================================================
--- trunk/psModules/src/concepts/pmConcepts.c	(revision 7310)
+++ trunk/psModules/src/concepts/pmConcepts.c	(revision 7311)
@@ -131,25 +131,44 @@
     }
 
+    bool success = true;                // Success in reading concepts?
     if (source & PM_CONCEPT_SOURCE_CAMERA && !(*read & PM_CONCEPT_SOURCE_CAMERA)) {
-        pmConceptsReadFromCamera(*specs, cell, target);
-        *read |= PM_CONCEPT_SOURCE_CAMERA;
+        if (pmConceptsReadFromCamera(*specs, cell, target)) {
+            *read |= PM_CONCEPT_SOURCE_CAMERA;
+        } else {
+            psError(PS_ERR_UNKNOWN, false, "Error reading concepts from camera configuration.\n");
+            success = false;
+        }
     }
 
     if (source & PM_CONCEPT_SOURCE_DEFAULTS && !(*read & PM_CONCEPT_SOURCE_DEFAULTS)) {
-        pmConceptsReadFromDefaults(*specs, fpa, chip, cell, target);
-        *read |= PM_CONCEPT_SOURCE_DEFAULTS;
+        if (pmConceptsReadFromDefaults(*specs, fpa, chip, cell, target)) {
+            *read |= PM_CONCEPT_SOURCE_DEFAULTS;
+        } else {
+            psError(PS_ERR_UNKNOWN, false, "Error reading concepts from defaults.\n");
+            success = false;
+        }
     }
 
     if (source & PM_CONCEPT_SOURCE_HEADER && !(*read & PM_CONCEPT_SOURCE_HEADER)) {
-        pmConceptsReadFromHeader(*specs, fpa, chip, cell, target);
-        *read |= PM_CONCEPT_SOURCE_HEADER;
-    }
-
+        if (pmConceptsReadFromHeader(*specs, fpa, chip, cell, target)) {
+            *read |= PM_CONCEPT_SOURCE_HEADER;
+        } else {
+            psError(PS_ERR_UNKNOWN, false, "Error reading concepts from header.\n");
+            success = false;
+        }
+    }
+
+    #ifndef OMIT_PSDB
     if (source & PM_CONCEPT_SOURCE_DATABASE && !(*read & PM_CONCEPT_SOURCE_DATABASE)) {
-        pmConceptsReadFromDatabase(*specs, fpa, chip, cell, db, target);
-        *read |= PM_CONCEPT_SOURCE_DATABASE;
-    }
-
-    return true;
+        if (pmConceptsReadFromDatabase(*specs, fpa, chip, cell, db, target)) {
+            *read |= PM_CONCEPT_SOURCE_DATABASE;
+        } else {
+            psError(PS_ERR_UNKNOWN, false, "Error reading concepts from database.\n");
+            success = false;
+        }
+    }
+    #endif
+
+    return success;
 }