Index: TODO
===================================================================
diff -u -rfc36bf33edd6f5b3f273cb2abdcb30f2ececdff4 -r4271f1017962a2fc3613d6be3f31f01ef2f63d82
--- TODO	(.../TODO)	(revision fc36bf33edd6f5b3f273cb2abdcb30f2ececdff4)
+++ TODO	(.../TODO)	(revision 4271f1017962a2fc3613d6be3f31f01ef2f63d82)
@@ -2325,6 +2325,8 @@
 - update slot uml diagram
 - fixed incorrect (unwanted) call to unknown that caused creation
   of objects names __unknown when classes could not be resolved
+- nsf::relation: fixed error message when receiving and invalid 
+  class for relation type "class"
 
 TODO: