in boost getting started guide, there is an example : #include <boost/lambda/lambda.hpp> #include <iostream> #include <iterator> #include <algorithm> int main() { using namespace boost::lambda; typedef std::istream_iterator<int> in; std::for_each( in(std::cin), in(), std::cout << (_1 * 3) << " " ); } in vs2005, its no problem. but with VC++6.0(without precompile header), this error occurs: c:\program files\boost\boost_1_34_0\boost\lambda\detail\lambda_fwd.hpp(26) : fatal error C1001: INTERNAL COMPILER ERROR (compiler file 'msc1.cpp', line 1786) Please choose the Technical Support command on the Visual C++ Help menu, or open the Technical Support help file for more information how to solve this problem ? anders