std::cout under Windows Vista?

I'm using C++, compiled using Microsoft Visual C++ .NET (2003), under Windows XP. I use statements like
std::cout << "Got to here" << std::endl;
to debug the program. I've got
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
at the start of the program. I run the program using a batch file which redirects the output to a file. All works fine.

Now I take the .exe program and run it on another machine under Windows Vista. When I run it, the output to std::cout fails to appear. Why is that?

In case it's relevant, the Vista machine has installed Microsoft Visual C++ Toolkit 2003; Microsoft Visual C++ 2005 Express Edition; Microsoft Visual C++ 2008 redistributable; Microsoft Visual C++ 2010 x86 redistributable.

The program is actually a Delphi Pascal program calling C++ functions. The Pascal bit also produces output. In XP, the Pascal and C++ output are interleaved. In Vista, I only get the Pascal output.

Thanks for any hints.

Sorry, not enough information to even remotely figure out the problem.
First off, grab Visual Studio 2013 Community Edition. Compile your code. Fix any errors and warnings. Run. Does it still provide the same result? If so, simplify the program as much as you can until the error goes away, then post the entire code here.

Is the source computer using static or dynamic linking?

I appreciate the responses but the problem has "gone away". The temporary diagnostic COUT output which was disappearing yesterday on my Vista machine is appearing today (possibly versions got mixed up with all the changing and recompiling on my XP machine and transferring on memory stick). And anyway the program is now doing what I want, so I don't actually need the diagnostic output any more. But thanks for your time.