I've moved changes from RC_1_33_0 to HEAD and tested on my own machine. I've got a couple of problems. The first one shows up and compilation error with both versions of Borland (5.51 and 5.64). C:\BoostHead\libs\serialization\build\../src/xml_grammar.cpp: Error E2272 C:\BoostHead\boost/bind.hpp 1579: Identifier expected Error E2188 C:\BoostHead\boost/bind.hpp 1579: Expression syntax Error E2299 C:\BoostHead\boost/bind.hpp 1582: Cannot generate template specialization from 'add_cref<Pm,I>' Error E2428 C:\BoostHead\boost/bind.hpp 1589: Templates must be classes or functions Error E2401 C:\BoostHead\boost/bind.hpp 1616: Invalid template argument listI believe this is due to changes made in boost/bind.hpp by Peter Dimov in the head after the RC_1_33_0 was branched. Peter, could you take a look at this? Robert Ramey