"Andrei Popa" <andrei4popa@hotmail.com> wrote in message news:COL101-W28C447648F681AC70FA790E06E0@phx.gbl... Hi there, I have a dll that contain an abstract base class called DbObject and a DbDatabase class that contains a collection of shared_ptr<DbObject> . It dose work as long all derived classes are defined in the same dll. *** OK so far. With a class derived from DbObject and defined/implemented in my EXE (that use the DLL) I got archive_exception::unregistered_class. I tried to register it or to export it, but I could not make it work. *** So you put BOOST_CLASS_EXPORT(DbObject) in to a *.cpp file which is compiled as part of the exe? Any Ideas? I use Version 1.38 of the library & VC8(2005). When I use BOOST_CLASS_TYPE_INFO(as in test_no_rtti.cpp sample ) for my EXE resident class, the ::get_key is never called. // get the eti record for the exported type "polymorphic_derived2" boost::serialization::extended_type_info const * const d2_eti = boost::serialization::extended_type_info::find( "polymorphic_derived2" ); works too before I start to serialize the collection. *** is this an attempt the issure raised above or is this a separate question. Robert Ramey Thanks, Andrei See all the ways you can stay connected to friends and family _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users