Adding Event Macro to a Command Button at Run-time causes VB Editor to Pop-up

I'm using Excel 2003 SP2.

The premise is I add worksheets at run-time based off of user actions. The sheets then add command buttons and then assign some vb code to be fired when clicked. Everything works great except the VB editor pops up (even when its closed). This is annoying, any way to stop it from doing so?

VB Code:

Public Sub Test(myWS As Excel.Worksheet)
    Dim OLEObj As OLEObject
    Dim Rng As Range
    Dim WS As Worksheet
    Dim CodeMod As Object
    Dim LineNum As Long
    
    Set WS = myWS
    Set Rng = Range("I13")
        
    Set OLEObj = _
    WS.OLEObjects.Add(ClassType:="Forms.CommandButton.1", _
        Top:=Rng.Top, Left:=Rng.Left, Height:=Rng.Height * 2, _
        Width:=Rng.Width * 2)
    OLEObj.name = "test"
    OLEObj.Object.Caption = "test"
    Set CodeMod = _
    ThisWorkbook.VBProject.VBComponents(WS.CodeName).CodeModule
    LineNum = CodeMod.CreateEventProc("Click", OLEObj.name)
    CodeMod.insertLines LineNum + 1, _
        "msgbox(""test"")"        
End Sub