I'm upgrading from C++Builder 2007 with Boost 1.34.1 to C++Builder 2009 with Boost 1.35. (I realize that this is a few versions behind, but C++Builder compatibility seems problematic enough that I'm going to try sticking with 1.35, which is what the vendor officially supports. Or would people here recommend using a later version?) I'm running into problems loading XML archives containing vectors that were created by Boost 1.34.1. This appears to be the same problem that others have reported: https://svn.boost.org/trac/boost/ticket/1774 https://svn.boost.org/trac/boost/ticket/2271 http://lists.boost.org/boost-users/2009/05/48292.php If I understand those pages correctly, to work around this problem, I should be able to copy the relevant changes from Boost 1.39.0's boost/serialization/vector.hpp and boost/serialization/array.hpp, plus change BOOST_SERIALIZATION_VECTOR_VERSION from 3 to 4, and my copy of 1.35 will work both with 1.34.1 and with 1.36 and above. Is this correct? Thanks. Josh Kelley