hi all. I recently tried to execute this very simple example: #include <iostream> #include <boost/archive/text_oarchive.hpp> #include <boost/archive/text_iarchive.hpp> #include <boost/serialization/vector.hpp> #include <fstream> class A { public: A(){} private: //Serialization tasks friend class boost::serialization::access; template<class Archive> void serialize(Archive & , const unsigned int ) { } }; int main() { std::vector<A> eig; std::cout <<eig.size()<<std::endl; std::ofstream of("file.txt"); { boost::archive::text_oarchive oa(of); oa << eig; } of.close(); std::ifstream ifs("file.txt"); { boost::archive::text_iarchive ia(ifs); ia >> eig; } std::cout <<eig.size()<<std::endl; return 0; } On my compiler (gcc 4.4.1), it compile fine but there is a runtime error when the application start: /.../boost/serialization/singleton.hpp:124: static T& boost::serialization::singleton<T>::get_instance() [with T = boost::archive::detail::iserializer<boost::archive::text_iarchive, std::vector<EigMemberProps<int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<EigMemberProps<int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >]: Assertion `! detail::singleton_wrapper<T>::m_is_destroyed' failed. Curiously, the comportment of the gcc 4.1.2 of codepad is not the same: http://codepad.org/sEK2fLua Curiously, this works fine on my compiler when i olny serialize A but not with the codepad compiler: http://codepad.org/j3wlsWDv Do you have any clue about this problem ? Thanks