Index: trunk/psModules/src/concepts/pmConceptsStandard.c
===================================================================
--- trunk/psModules/src/concepts/pmConceptsStandard.c	(revision 15299)
+++ trunk/psModules/src/concepts/pmConceptsStandard.c	(revision 15300)
@@ -332,7 +332,9 @@
 psList *p_pmConceptParseRegions(const char *region)
 {
-    assert(region && strlen(region) > 0);
-
     psList *list = psListAlloc(NULL);   // List of regions
+    if (!region || strlen(region) == 0) {
+        // Empty list
+        return list;
+    }
 
     // a single BIASSEC is of the form [AAAA]