The trunk regression tests are showing a large number of failures for Parameter and Serialization (and several other libraries that use them). These seem to have appeared as a result of some recent type_traits changes. -parameter- The parameter tests are failing with: ..\boost/parameter/aux_/tagged_argument.hpp(173) : error C2504: 'is_convertible' : base class undefined This can be fixed by adding # include <boost/type_traits/is_convertible.hpp> to tagged_argument.hpp -serialization- The serialization tests are failing with: ..\boost/serialization/is_abstract.hpp(43) : warning C4005: 'BOOST_IS_ABSTRACT' : macro redefinition ..\boost/type_traits/intrinsics.hpp(99) : see previous definition of 'BOOST_IS_ABSTRACT' Due to a BOOST_IS_ABSTRACT that was just added to type_traits conflicting with one that already existed in serializtion. Thanks, Richard Webb