Hi, I'm using Boost 1.31.0 with VC++ 7.1 and I'm having some problems converting std::string to std::wstring and back. Here's the code that I'm trying to get to compile: std::wstring x = boost::lexical_caststd::wstring( std::string("this doesn't work")); std::string y = boost::lexical_caststd::string( std::wstring(L"neither does this")); The error I get for string to wstring: lexical_cast.hpp(150): error C2679: binary '>>' : no operator found which takes a right-hand operand of type 'std::wstring' (or there is no acceptable conversion) And the errors I get for wstring to string: lexical_cast.hpp(144): error C2679: binary '<<' : no operator found which takes a right-hand operand of type 'const std::basic_string<_Elem,_Traits,_Ax>' (or there is no acceptable conversion) with [ _Elem=wchar_t, _Traits=std::char_traits, _Ax=std::allocator ] lexical_cast.hpp(144): error C2228: left of '.fail' must have class/struct/union type Any ideas of what I'm doing wrong? Best Regards, Tony Djordjevski