it might be helpful to include boost version, compiler, os etc. Also informatoin as to how the applicaiton was built, makefile, ide, bjam, etc. Robert Ramey "calogero bennici" <tbennici@hotmail.com> wrote in message news:BAY124-W35079DB870B8B09D0227FEDFB10@phx.gbl... Hi all, just to example, I tried to execute the code in the "simple example": // create and open a character archive for output std::ofstream ofs("genetic_parameters.txt"); // create class instance const gps_position g(35, 59, 24.567f); // save data to archive { boost::archive::text_oarchive oa(ofs); // write class instance to archive oa << g; // archive and stream closed when destructors are called } // ... some time later restore the class instance to its orginal state gps_position newg; { // create and open an archive for input std::ifstream ifs("filename", std::ios::binary); boost::archive::text_iarchive ia(ifs); // read class state from archive ia >> newg; // archive and stream closed when destructors are called } but at line oa << g; the program break in Kernell32.dll. Any suggestions? Regards, Calogero ------------------------------------------------------------------------------ Play Movie Mash-up and win BIG prizes! ------------------------------------------------------------------------------ _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users