Index: library/serialize/Serializer.xotcl
===================================================================
diff -u -r210eab6d9149846d5d6a6a8e0fa74e232ca5b6de -r9a128ffc80f0c429d885af38e92c50b253cdb9e8
--- library/serialize/Serializer.xotcl	(.../Serializer.xotcl)	(revision 210eab6d9149846d5d6a6a8e0fa74e232ca5b6de)
+++ library/serialize/Serializer.xotcl	(.../Serializer.xotcl)	(revision 9a128ffc80f0c429d885af38e92c50b253cdb9e8)
@@ -359,7 +359,7 @@
 
       set r [subst {
         set ::xotcl::__filterstate \[::xotcl::configure filter off\]
-        ::xotcl::Slot mixin add ::xotcl::Slot::Nocheck
+        #::xotcl::Slot mixin add ::xotcl::Slot::Nocheck
         ::xotcl::configure softrecreate [::xotcl::configure softrecreate]
         ::xotcl::setExitHandler [list [::xotcl::getExitHandler]]
       }]\n
@@ -384,7 +384,7 @@
       }
 
       append r {
-        ::xotcl::Slot mixin delete ::xotcl::Slot::Nocheck
+        #::xotcl::Slot mixin delete ::xotcl::Slot::Nocheck
         ::xotcl::configure filter $::xotcl::__filterstate
         unset ::xotcl::__filterstate
       }