Incompatibility using managed array and std:array at same time
Clearly you have a using namespace std; in scope somewhere. Watch out for it being used in .h file if you cannot find it.
You can resolve the ambiguity, the C++/CLI extension keywords like array are in the cli namespace. This compiles fine:
#include "stdafx.h"#include <array>using namespace std; // <=== Uh-ohusing namespace System;int main(cli::array<System::String ^> ^args){ auto arr = gcnew cli::array<String^>(42); return 0;}