Hi, I'm trying to multiply a vector by a matrix. Pretty simple, but I'm running into problems as the compiler is complaining about the overloaded operator * Here's some code that produces the error. ------------------------------------------------------------------ #include <boost/numeric/ublas/matrix.hpp> #include <boost/numeric/ublas/io.hpp> #include <boost/numeric/ublas/vector.hpp> typedef boost::numeric::ublas::matrix<double> boost_matrix; typedef boost::numeric::ublas::vector<double> boost_vector; int _tmain(int argc, _TCHAR* argv[]) { boost_matrix mat(5,5); boost_vector v1(5), v2(5); v1 = v2 * mat; return 0; } ---------------------------------------------------------------------------------- The error message I'm getting is : "Error 1 error C2666: 'boost::numeric::ublas::operator *' : 2 overloads have similar conversions boost_matrix_multiplication.cpp 18" I'm using Visual Studio 2008 Express and boost 1.36. This looks like a very simple problem, and any help would be greatly appreciated. Phil