Hi boost, I've encountered another VC 2013 problem. alt_sstream doesn't compile, since its base class std::basic_streambuf has an explicitely nonthrowing dtor. I actually had to fix it at two places: - virtual ~basic_altstringbuf() + virtual ~basic_altstringbuf() BOOST_NOEXCEPT_OR_NOTHROW and + virtual ~basic_oaltstringstream() BOOST_NOEXCEPT_OR_NOTHROW + { } Please, can anyone explain the second place: why doesn't the compiler-generated dtor inherit the nothrow clause? Is it due to the other base class (base_from_member< shared_ptr<...> >)? The weird thing is that MS even advocates the usage of boost.format with MSVC 2013: http://msdn.microsoft.com/en-us/library/hh438469.aspx So I am not 100% sure, whether the problem is boost/MSVC-related or my configuration is wrong. Google is surprisingly quiet regarding the issue. Best Olaf