I'm trying to use the serialization and archive libraries, and I'm having a bit of trouble getting non-intrusive serializaton to work; I keep getting the error "c:\boost_1_32_0\boost\serialization\access.hpp(106): error C2039: 'serialize' : is not a member of 'D2::Message'". My guess is that for some reason the "long int" hack isn't working properly. I have serialize methods in the boost::seralization namespace like this: namespace boost { namespace serialization { template<class Archive > static void serialize(Archive & ar, const D2::Message& g, const unsigned int version) { //... } } }; Which are textually before any use of the library, as far as I can tell. Any help would be much appreciated. Marcin Tustin IT Innovation Centre 2 Venture Road Chilworth Science Park Southampton, SO16 7NP, UK tel: +44 23 8076 0834 fax: +44 23 8076 0833 mailto:mt@it-innovation.soton.ac.uk http://www.it-innovation.soton.ac.uk