I'm attempting to upgrade my solution to 2005 from 2003 and it compiles fine until it gets to boost then I get errors. Here's the error: Error 889 error C2665: 'boost::python::detail::make_getter' : none of the 3 overloads could convert all the argument types ...\boost-1.32.0\include\boost\python\data_members.hpp 277 I thought it may be related to having an older version of Boost so I upgraded to 1.33.1 and am still having the same error: boost-1.33.1\include\boost\python\data_members.hpp(277) : error C2665: 'boost::python::detail::make_getter' : none of the 3 overloads could convert all the argument types Any ideas? --------------------------------- Brings words and photos together (easily) with PhotoMail - it's free and works with Yahoo! Mail.