--- a/Registry.st	Thu Oct 01 14:21:11 2015 +0200
+++ b/Registry.st	Thu Oct 01 14:31:30 2015 +0200
@@ -283,6 +283,9 @@
 size
     "answer the number of entries in the registry"
 
+    tally isNil ifTrue:[
+	^ 0.
+    ].
     ^ tally
 ! !