[Erro] Compilar Source MSVC

Boa noite, queria saber como faço pra tirar esses dois erros

 

1>..\scriptmanager.cpp(147): error C2039: 'string' : is not a member of 'std::basic_string<_Elem,_Traits,_Ax>'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>,
1>              _Ax=std::allocator<char>
1>          ]
1>..\luascript.cpp(767): error C2039: 'string' : is not a member of 'std::basic_string<_Elem,_Traits,_Ax>'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>,
1>              _Ax=std::allocator<char>
1>          ]

Editado Agosto 1, 2015 10 anos por gbik (veja o histórico de edições)