Well, I guess I'll work around it for gcc by using register_type(). Wayne ------------------------------ Message: 6 Date: Wed, 29 Mar 2006 20:39:57 -0800 From: "Robert Ramey" <ramey@rrsd.com> Subject: Re: [Boost-users] Serialization library question To: boost-users@lists.boost.org Message-ID: <e0fnef$aus$1@sea.gmane.org> I compiled, linked and executed this exact program on my VC 7.1 setup. I had no problems of any kind Robert Ramey