Hi, after "cvs up" is run into two new problems with serialization. First is missing include, patch attached. The second is this: gcc.compile.c++ ../../../src/runtime/bin/gcc/debug/threading-multi/runtime_standalone.o In file included from /space/NM/boost/boost/archive/detail/iserializer.hpp:47, from /space/NM/boost/boost/archive/basic_binary_iarchive.hpp:36, from /space/NM/boost/boost/archive/binary_iarchive.hpp:21, from ../../../src/runtime/runtime_standalone.cpp:14: /space/NM/boost/boost/serialization/is_abstract.hpp:30: error: redefinition of `struct boost::is_abstract<T>' /space/NM/boost/boost/type_traits/is_abstract.hpp:130: error: previous definition of `struct boost::is_abstract<T>' The second patch addresses this problem, but I'd also suggest to remove boost/serialization/is_abstract.hpp to avoid further problems. This happens in CVS HEAD, but I suspect the same problems might be present on release branch, and so should be merged there. - Volodya