The following simple problem produces an error when compiling with VC8+SP1 on Windows: #include <vector> #include <boost/range/sub_range.hpp> int main(int argc, char* argv[]) { typedef std::vector< int > VectorType; VectorType v; boost::sub_range< VectorType > range; boost::sub_range< VectorType > range1; range = range1; return 0; } boost\boost\range\iterator_range.hpp(60) : error C2440: '<function-style-cast>' : cannot convert from 'std::_Vector_const_iterator<_Ty,_Alloc>' to 'std::_Vector_iterator<_Ty,_Alloc>' 1> with 1> [ 1> _Ty=int, 1> _Alloc=std::allocator<int> 1> ] 1> No constructor could take the source type, or constructor overload resolution was ambiguous This happens with both 1.34.1 and trunk but 1.33 is OK. Regards, Sean