Hello, I've upgraded to 1.47, and any attempt to include a Spirit header produces the following compiler error (MSVC 10): #include int main() { } "../spirit/home/support/detail/endian.hpp(22): fatal error C1083: Cannot open include file: 'boost/integer/endian.hpp': No such file or directory" The error is in the following lines: // If Boost has the endian library, use it, otherwise use an adapted version // included with Spirit #if BOOST_VERSION >= 104600 #include #else #include #endif Actually, there's no boost/integer/endian.hpp file in the zip that I've downloaded. What am I doing wrong? Thanks.