The program that causes this error used to compile (until a few days ago) I'm using the cvs HEAD c:\boost\include\boost-1_32\boost\iterator\iterator_facade.hpp(326) : error C2664: 'boost::implicit_cast' : cannot convert parameter 1 from 'const std::string *__w64 ' to 'boost::mpl::identity::type' with [ T=boost::detail::operator_arrow_result,std::basic_string,std::allocator>::const_iterator,std::string>,std::string,boost::detail::minimum_category::type>::type,const std::string &>::value_type,boost::iterator_facade,std::basic_string,std::allocator>::const_iterator,std::string>,std::string,boost::detail::minimum_category::type>::type,const std::string &>::reference,boost::iterator_facade,std::basic_string,std::allocator>::const_iterator,std::string>,std::string,boost::detail::minimum_category::type>::type,const std::string &>::pointer>::type ] Conversion loses qualifiers c:\boost\include\boost-1_32\boost\iterator\iterator_facade.hpp(325) : while compiling class-template member function 'boost::detail::operator_arrow_result::type boost::detail::operator_arrow_result::make(Reference)' with [ ValueType=boost::iterator_facade,std::basic_string,std::allocator>::const_iterator,std::string>,std::string,boost::detail::minimum_category::type>::type,const std::string &>::value_type, Reference=boost::iterator_facade,std::basic_string,std::allocator>::const_iterator,std::string>,std::string,boost::detail::minimum_category::type>::type,const std::string &>::reference, Pointer=boost::iterator_facade,std::basic_string,std::allocator>::const_iterator,std::string>,std::string,boost::detail::minimum_category::type>::type,const std::string &>::pointer ] c:\boost\include\boost-1_32\boost\iterator\iterator_facade.hpp(642) : see reference to class template instantiation 'boost::detail::operator_arrow_result' being compiled with [ ValueType=boost::iterator_facade,std::basic_string,std::allocator>::const_iterator,std::string>,std::string,boost::detail::minimum_category::type>::type,const std::string &>::va lue_type, Reference=boost::iterator_facade,std::basic_string,std::allocator>::const_iterator,std::string>,std::string,boost::detail::minimum_category::type>::type,const std::string &>::reference, Pointer=boost::iterator_facade,std::basic_string,std::allocator>::const_iterator,std::string>,std::string,boost::detail::minimum_category::type>::type,const std::string &>::pointer ] c:\boost\include\boost-1_32\boost\token_iterator.hpp(41) : see reference to class template instantiation 'boost::iterator_facade' being compiled with [ Derived=boost::token_iterator,std::basic_string,std::allocator>::const_iterator,std::string>, Value=std::string, CategoryOrTraversal=boost::detail::minimum_category::type>::type, Reference=const std::string & ] c:\boost\include\boost-1_32\boost\date_time\date_parsing.hpp(119) : see reference to class template instantiation 'boost::token_iterator' being compiled with [ TokenizerFunc=boost::char_delimiters_separator, Iterator=std::basic_string,std::allocator>::const_iterator, Type=std::string ] c:\boost\include\boost-1_32\boost\date_time\gregorian\parsers.hpp(24) : see reference to function template instantiation 'date_type boost::date_time::parse_date(const std::string &,int)' being compiled with [ date_type=boost::gregorian::date ] Victor A. Wagner Jr. http://rudbek.com The five most dangerous words in the English language: "There oughta be a law"