Unable to access Excel's Application.ComAddIns property if there are no AddIns installed

This code snipped for the Windows Scripting Host displays the number of COM-AddIns currently installed into Excel.

It works fine except for when there are no COM-AddIns installed. I believe it should output a "0", but instead it raises an exception (code 800A03EC). Does anyone know why?

test.vbs

Set objExcel = CreateObject("Excel.Application")
WScript.Echo objExcel.ComAddIns.Count

From stackoverflow

• Looks like a bug in Excel. You'll probably have to abuse VB's error handling to work around it.

  On Error Resume Next
  WScript.Echo objExcel.ComAddIns.Count
  If Err And Err.Number = 1004 Then
      WScript.Echo "No add-ins"
  End If
  On Error GoTo 0