Hi !! When trying to compile a simple program (just a main and nothing in it) I get a lot of compile error... I'm using VC 6.0 SP5, STLport 4.5.3 and boost 1.29. This is what I include in the program : #include <iostream> #include <boost/python.hpp> #include <boost/date_time/posix_time/posix_time.hpp> Here are the error messages : boost\date_time\compiler_config.hpp(33) : error C2782: ' __cdecl _STL::abs()' : template parameter 'T' is ambiguous could be 'long double' or 'const struct _STL::complex<long double> &' boost\date_time\compiler_config.hpp(33) : error C2785: ' __cdecl _STL::abs()' and 'long double __cdecl _STL::abs(const struct _STL::complex<long double> &)' have different return types \boost\date_time\compiler_config.hpp(30) : see declaration of 'abs' boost\date_time\compiler_config.hpp(33) : error C2782: ' __cdecl _STL::abs()' : template parameter 'T' is ambiguous could be 'double' or 'const struct _STL::complex<double> &' boost\date_time\compiler_config.hpp(33) : error C2785: ' __cdecl _STL::abs()' and 'double __cdecl _STL::abs(const struct _STL::complex<double> &)' have different return types boost\date_time\compiler_config.hpp(30) : see declaration of 'abs' boost\date_time\compiler_config.hpp(33) : error C2782: ' __cdecl _STL::abs()' : template parameter 'T' is ambiguous could be 'float' or 'const struct _STL::complex<float> &' boost\date_time\compiler_config.hpp(33) : error C2785: ' __cdecl _STL::abs()' and 'float __cdecl _STL::abs(const struct _STL::complex<float> &)' have different return types boost\date_time\compiler_config.hpp(30) : see declaration of 'abs' Has this been reported ??? Are Boost.Python and posix_time incompatible ??? If not, can someone point to a solution. Thanks a lot for your time. Luc.