OK, I'll paste it inline and attach a zip. Build Log ------- Build started: Project: PyChemistryInterface, Configuration: Release|Win32 ------- Command Lines Creating temporary file "q:\src\pmdcrc\f2\SiroPyGC\src\Vcpp\Release\RSP000001.rsp" with contents [ /Oi /Op /Ot /Oy /I ".\boost" /I "c:\python22\include" /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_USRDLL" /D "NO_ITERATOR_TRAITS" /D "CONVERT_ARRAY_OBJECTS" /D "_WINDLL" /D "_MBCS" /FD /EHsc /MD /GR /YX"stdafx.h" /Fp".\Release/PyChemistryInterface.pch" /Fo".\Release/" /Fd".\Release/" /W3 /c /Zm300 \src\pmdcrc\f2\SiroPyGC\src\foo.cpp ] Creating command line "cl.exe @q:\src\pmdcrc\f2\SiroPyGC\src\Vcpp\Release\RSP000001.rsp /nologo" Output Window Compiling... foo.cpp \src\pmdcrc\f2\SiroPyGC\src\foo.cpp(13) : warning C4290: C++ exception specification ignored except to indicate a function is not __declspec(nothrow) boost\boost\python\detail\invoke.hpp(82) : error C2064: term does not evaluate to a function taking 2 arguments boost\boost\python\detail\caller.hpp(199) : see reference to function template instantiation 'PyObject *boost::python::detail::invoke(boost::python::detail::invoke_tag_,const RC &,F & ,AC0 &,AC1 &)' being compiled with [ ResultConverter=result_converter, T=boost::details::compressed_pair_imp::apply::all_t,boost::mpl::lambda_impl>,boost::python::detail::is_reference_to_class,boost::mpl::not_>>,boost::mpl::void_,boost::mpl::true_>::type>::result_type,2>::first_type, void_return=true, member=false, RC=result_converter, F=boost::details::compressed_pair_imp::apply::all_t,boost::mpl::lambda_impl>,boost::python::detail::is_reference_to_class,boost::mpl::not_>>,boost::mpl::void_,boost::mpl::true_>::type>::result_type,2>::first_type, AC0=c_t0, AC1=c_t1 ] boost\boost\python\detail\caller.hpp(176) : while compiling class-template member function 'PyObject *boost::python::detail::caller_arity<2>::impl::operator ()(PyObject *,PyObject *)' with [ F=void (__thiscall World::* )(std::string) throw(exception), Policies=boost::python::detail::tuple_extract_impl::apply::all_t,boost::mpl::lambda_impl>,boost::python::detail::is_reference_to_class,boost::mpl::not_>>,boost::mpl::void_,boost::mpl::true_>::type>::result_type, Sig=boost::mpl::vector3,World,World>::type &,std::string> ] boost\boost\python\detail\caller.hpp(145) : see reference to class template instantiation 'boost::python::detail::caller_arity<2>::impl' being compiled with [ F=void (__thiscall World::* )(std::string) throw(exception), Policies=boost::python::detail::tuple_extract_impl::apply::all_t,boost::mpl::lambda_impl>,boost::python::detail::is_reference_to_class,boost::mpl::not_>>,boost::mpl::void_,boost::mpl::true_>::type>::result_type, Sig=boost::mpl::vector3,World,World>::type &,std::string> ] boost\boost\python\make_function.hpp(62) : see reference to class template instantiation 'boost::python::detail::caller' being compiled with [ F=void (__thiscall World::* )(std::string) throw(exception), CallPolicies=boost::python::detail::tuple_extract_impl::apply::all_t,boost::mpl::lambda_impl>,boost::python::detail::is_reference_to_class,boost::mpl::not_>>,boost::mpl::void_,boost::mpl::true_>::type>::result_type, Sig=boost::mpl::vector3,World,World>::type &,std::string> ] boost\boost\python\make_function.hpp(147) : see reference to function template instantiation 'boost::python::api::object boost::python::detail::make_function_aux>(F,const CallPolicies &,const Sig &,const boost::python::detail::keyword_range &,NumKeywords)' being compiled with [ F=void (__thiscall World::* )(std::string) throw(exception), CallPolicies=boost::python::detail::tuple_extract_impl::apply::all_t,boost::mpl::lambda_impl>,boost::python::detail::is_reference_to_class,boost::mpl::not_>>,boost::mpl::void_,boost::mpl::true_>::type>::result_type, Signature=boost::mpl::vector3,World,World>::type &,std::string>, BOOST_PP_ITERATION_0=0, Sig=boost::mpl::vector3,World,World>::type &,std::string>, NumKeywords=boost::mpl::int_<0> ] boost\boost\python\class.hpp(542) : see reference to function template instantiation 'boost::python::api::object boost::python::make_function::apply::result_type,boost::python::detail::tuple_extract_impl::apply>::result_type,boost::mpl::vector3>(F,const CallPolicies &,const Keywords &,const Signature &)' being compiled with [ Fn=void (__thiscall World::* )(std::string) throw(exception), Tuple=boost::python::detail::def_helper::all_t, Predicate=boost::mpl::lambda_impl>,boost::python::detail::is_reference_to_class,boost::mpl::not_>>,boost::mpl::void_,boost::mpl::true_>::type, T=boost::mpl::bind1,boost::mpl::lambda_impl::type>, T0=void, T1=boost::mpl::if_,World,World>::type &, T2=std::string, F=void (__thiscall World::* )(std::string) throw(exception), CallPolicies=boost::python::detail::tuple_extract_impl::apply::all_t,boost::mpl::lambda_impl>,boost::python::detail::is_reference_to_class,boost::mpl::not_>>,boost::mpl::void_,boost::mpl::true_>::type>::result_type, Keywords=boost::python::detail::tuple_extract_impl::apply::all_t,boost::mpl::lambda_impl,boost::mpl::void_,boost::mpl::true_>::type>::result_type, Signature=boost::mpl::vector3,World,World>::type &,std::string> ] boost\boost\python\class.hpp(304) : see reference to function template instantiation 'void boost::python::class_::def_impl>(const char *,Fn,const Helper &,...)' being compiled with [ T=World, F=void (__thiscall World::* )(std::string) throw(exception), T1=const char *, Fn=void (__thiscall World::* )(std::string) throw(exception), Helper=boost::python::detail::def_helper ] \src\pmdcrc\f2\SiroPyGC\src\foo.cpp(26) : see reference to function template instantiation 'boost::python::class_::self &boost::python::class_::def(const char *,F)' being compiled with [ T=World, F=void (__thiscall World::* )(std::string) throw(exception) ] Results Build log was saved at "file://q:\src\pmdcrc\f2\SiroPyGC\src\Vcpp\Release\BuildLog.htm" PyChemistryInterface - 1 error(s), 1 warning(s)