Having problems with boost 1.44 and serialisation on Linux, gcc 4.2.1 I am migrating from boost 1.43 to boost 1.44 and get compiler errors of the form: In file included from ACore/src/TimeSeries.hpp:13, from ACore/test/TestTimeSeries.cpp:16: /var/tmp/ma0/boost/boost_1_44_0/boost/date_time/posix_time/time_serialize.hpp: In function ‘void boost::serialization::save(Archive&, const boost::posix_time::time_duration&, unsigned int)’: /var/tmp/ma0/boost/boost_1_44_0/boost/date_time/posix_time/time_serialize.hpp:42: error: there are no arguments to ‘make_nvp’ that depend on a template parameter, so a declaration of ‘make_nvp’ must be available This is surprising as boost 1.44 release notes makes no mention of any changes to boost serialisation ? Can anyone help ? Best regards, Ta, Avi