Focus not returning to command window after CreateObject

Hi all

In the command window if I run the command o = CreateObject("Excel.Application"), an instance of Excel is created and focus returns to the command window.

If I run the command o = CreateObject("Stopwatch.Stopwatch"), an instance of my stopwatch (in Stopwatch.EXE) is created but focus does NOT return to the command window.

Any ideas? TIA

Paul Newton