--- a/EventHandler.cpp.old	2004-11-04 22:58:13.735812448 +1100
+++ b/EventHandler.cpp	2004-11-04 22:57:03.176539088 +1100
@@ -326,7 +326,7 @@
         number_of_reference_stickers_needed--;
         reference_stickers_needed++;
         if (number_of_reference_stickers_needed == 0)
-            (this->*what_to_do_after_got_reference_stickers)();
+            (this->*what_to_do_after_got_reference_stickers)(NULL);
     }
 }