Hi. When testing it, I've found that the CVS version of lexical_cast apparently doesn't work for MSVC 6 (at least with my setup). I get the following errors when running the unit test: boost/lexical_cast.hpp(178) : error C2059: syntax error : '<' boost/lexical_cast.hpp(180) : see reference to class template instantiation 'boost::detail::lexical_stream<Target,Source>' being compiled boost/lexical_cast.hpp(178) : error C2238: unexpected token(s) preceding ';' boost/lexical_cast.hpp(180) : see reference to class template instantiation 'boost::detail::lexical_stream<Target,Source>' being compiled boost/test/utils/basic_cstring/bcs_char_traits.hpp(120) : error C2143: syntax error : missing ',' before '<' boost/test/utils/basic_cstring/bcs_char_traits.hpp(120) : error C2059: syntax error : '<' boost/test/utils/basic_cstring/bcs_char_traits.hpp(120) : fatal error C1903: unable to recover from previous error(s); stopping compilation I also see that the current regression test doesn't include MSVC 6 (http://www.meta-comm.com/engineering/boost-regression/developer/conversion. html). Because of this, Kevlin Henney and I was wondering whether or not MSVC 6 support for this component (and components in Boost in general) is no longer demanded, or in general, what the required conformance level is? If MSVC 6 support is still needed, I guess the above problems should be fixed. It seems to crash out in Boost.Test, as well. I see there are a few other failures in the regression test for more conformant compilers, though, and I'll look into these. Regards, Terje