Hello. I have problem compiling following empty project: #include "stdafx.h" //-------------------------------------------------------------------------- - #include #include // for boost::uint16_t, etc. #include //-------------------------------------------------------------------------- - int _tmain(int argc, _TCHAR* argv[]) { return 0; } //-------------------------------------------------------------------------- - with following errors: d:\compil\vc_libs\boost_1_27_0\boost\crc.hpp(71) : error C2059: syntax error : '<constant tree>' d:\compil\vc_libs\boost_1_27_0\boost\crc.hpp(94) : error C2977: 'boost::crc_optimal' : too many template arguments d:\compil\vc_libs\boost_1_27_0\boost\crc.hpp(75) : see declaration of 'boost::crc_optimal' d:\compil\vc_libs\boost_1_27_0\boost\crc.hpp(95) : error C2977: 'boost::crc_optimal' : too many template arguments d:\compil\vc_libs\boost_1_27_0\boost\crc.hpp(75) : see declaration of 'boost::crc_optimal' d:\compil\vc_libs\boost_1_27_0\boost\crc.hpp(96) : error C2977: 'boost::crc_optimal' : too many template arguments d:\compil\vc_libs\boost_1_27_0\boost\crc.hpp(75) : see declaration of 'boost::crc_optimal' d:\compil\vc_libs\boost_1_27_0\boost\crc.hpp(98) : error C2977: 'boost::crc_optimal' : too many template arguments d:\compil\vc_libs\boost_1_27_0\boost\crc.hpp(75) : see declaration of 'boost::crc_optimal' d:\compil\vc_libs\boost_1_27_0\boost\crc.hpp(258) : error C2983: 'boost::crc_optimal' : new template parameter list has more parameters than the previous declaration d:\compil\vc_libs\boost_1_27_0\boost\crc.hpp(258) : see declaration of 'boost::crc_optimal' d:\compil\vc_libs\boost_1_27_0\boost\crc.hpp(214) : error C2062: type '<template parameter>' unexpected d:\compil\vc_libs\boost_1_27_0\boost\crc.hpp(258) : see reference to class template instantiation 'boost::crc_optimal<,TruncPoly,InitRem,FinalXor,,>' being compiled What is the proplem? I'm using MS VC 7. -- Best regards, GIE