On a similar note, I also noticed the following: iterator/detail/facade_iterator_category.hpp:# include <boost/python/detail/indirect_traits.hpp> iterator/indirect_iterator.hpp:#include <boost/python/detail/indirect_traits.hpp> It doesn't seem right that iterator should be including headers from python/detail. Tom -------------------------------------------------------- NOTICE: If received in error, please destroy and notify sender. Sender does not waive confidentiality or privilege, and use is prohibited.