Hi, I'm getting an compiler error when I try to build gil::io documentation. ...patience... ...patience... ...found 1737 targets... ...updating 5 targets... compile-c-c++ ..\..\..\..\bin.v2\tools\quickbook\src\msvc-10.0\release\link-static\threading-multi\values.obj values.cpp C:\boost\tools\quickbook\src\values.cpp(444) : error C2593: 'operator ==' is ambiguous ..\..\..\..\boost/utility/string_ref.hpp(275): could be 'bool boost::operator ==<char,std::char_traits<char>>(boost::basic_string_ref<charT,traits>,boost::basic_string_ref<charT,traits>)' [found using argument-dependent lookup] with [ charT=char, traits=std::char_traits<char> ] ..\..\..\..\boost/utility/string_ref.hpp(270): or 'bool boost::operator ==<char,std::char_traits<char>>(boost::basic_string_ref<charT,traits>,boost::basic_string_ref<charT,traits>)' [found using argument-dependent lookup] with [ charT=char, traits=std::char_traits<char> ] ..\..\..\..\boost/utility/string_ref.hpp(265): or 'bool boost::operator ==<char,std::char_traits<char>>(boost::basic_string_ref<charT,traits>,boost::basic_string_ref<charT,traits>)' [found using argument-dependent lookup] with [ charT=char, traits=std::char_traits<char> ] while trying to match the argument list '(boost::string_ref, boost::string_ref)' C:\boost\tools\quickbook\src\values.cpp(499) : error C2593: 'operator ==' is ambiguous ..\..\..\..\boost/utility/string_ref.hpp(275): could be 'bool boost::operator ==<char,std::char_traits<char>>(boost::basic_string_ref<charT,traits>,boost::basic_string_ref<charT,traits>)' [found using argument-dependent lookup] with [ charT=char, traits=std::char_traits<char> ] ..\..\..\..\boost/utility/string_ref.hpp(270): or 'bool boost::operator ==<char,std::char_traits<char>>(boost::basic_string_ref<charT,traits>,boost::basic_string_ref<charT,traits>)' [found using argument-dependent lookup] with [ charT=char, traits=std::char_traits<char> ] ..\..\..\..\boost/utility/string_ref.hpp(265): or 'bool boost::operator ==<char,std::char_traits<char>>(boost::basic_string_ref<charT,traits>,boost::basic_string_ref<charT,traits>)' [found using argument-dependent lookup] with [ charT=char, traits=std::char_traits<char> ] while trying to match the argument list '(boost::string_ref, boost::string_ref)' call "C:\program files (x86)\microsoft visual studio 10.0\VC\vcvarsall.bat" x86 >nul cl /Zm800 -nologo @"..\..\..\..\bin.v2\tools\quickbook\src\msvc-10.0\release\link-static\threading-multi\values.obj.rsp" ...failed compile-c-c++ ..\..\..\..\bin.v2\tools\quickbook\src\msvc-10.0\release\link-static\threading-multi\values.obj... ...skipped <p..\..\..\..\bin.v2\tools\quickbook\src\msvc-10.0\release\link-static\threading-multi>quickbook.exe for lack of <p..\..\..\..\bin.v2\tools\quickbook\src\msvc-10.0\release\link-static\threading-multi>values.obj... ...skipped <p..\..\..\..\bin.v2\libs\gil\io\doc\msvc-10.0\debug\threading-multi>io.xml for lack of <p..\..\..\..\bin.v2\tools\quickbook\src\msvc-10.0\release\link-static\threading-multi>quickbook.exe... ...skipped <p..\..\..\..\bin.v2\libs\gil\io\doc\msvc-10.0\debug\threading-multi>io.docbook for lack of <p..\..\..\..\bin.v2\libs\gil\io\doc\msvc-10.0\debug\threading-multi-object(xinclude-scanner)@1505>io.xml... ...skipped <phtml>standalone_HTML.manifest for lack of <p..\..\..\..\bin.v2\libs\gil\io\doc\msvc-10.0\debug\threading-multi>io.docbook... ...failed updating 1 target... ...skipped 4 targets... Regards, Christian