Hi folks! I've just installed the serialization boost library and I'm trying to run it but I get the error in the subject. I'm trying to integrate the serialization in my project and for the begining I'm trying to follow the very simple example :-/. I've already searched the internet for this error, and I get some pages but without any answer... So here is the code: class A { private: friend class boost::serialization::access; int dumbi; float dumbf; template<class Archive> void serialize(Archive &ar, const unsigned int version) { ar & dumgf; ar & dumbi; } public: A():dumbi(12), dumbf(69.69f) { } A(int dumb1, float dumb2) : dumbi(dumb1), dumbf(dumb2) { } }; class SilvTask { private: typedef DefaultTask Parent; int dumbi; float dumbf; A testA; bool m_save, m_xml; std::string m_filename; public: SilvTask():m_save(false), dumbf(69.69f), dumbi(7), m_xml(false) { } int SilvTask::ParseArguments(const std::vectorstd::string& args) { for(uint32 i = 0; i < (uint32)args.size(); i++) { if(args[i].find("-xml")) m_xml = true; if(args[i].find("-save=") != std::string::npos) { m_filename = args[i].substr(6); m_save = true; } else if(args[i].find("-load=") != std::string::npos) { m_filename = args[i].substr(6); m_save = false; } } return FE_OK; } int SilvTask::LoadData() { if(m_save) WriteObject(); else LoadObject(); return FE_OK; } int SilvTask::WriteObject() { A aux(12, 69.69f); // create and open a character archive for output std::ofstream ofs(m_filename.c_str()); boost::archive::text_oarchive oa(ofs); //write class instance to archive oa << aux; return FE_OK; } int SilvTask::LoadObject() { A newAux; std::ifstream ifs(m_filename.c_str(), std::ios::binary); boost::archive::text_iarchive ia(ifs); // read class state from archive ia >> newAux; return FE_OK; } }; any ideias? Thanks -- Miguel Silvestre