In the documention is described how to use "version" to conditionally invoke code depending upon the BOOST_CLASS_VERSION setting at the time the archive was created? Does this not address your situation? Robert Ramey "David Graf" <david.graf@28msec.com> wrote in message news:500991ee0904080518k4a571d54m6712cf1a83e05219@mail.gmail.com... Hello How is it possible to load serialized objects with a newer boost version than they have been saved with. I have installed boost version 1.36 and I cannot read archives that have been save with boost 1.35. This is not possible because boost 1.35 puts 'serialization::archive 4' into the files but boost 1.36 needs the archive version 5. I found some information in the documentation that is must be possible to read old archives. But I am not able to do it. I always get exceptions. Thank you in advance for help! David ------------------------------------------------------------------------------ _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users