ColinE66 i love your add-in... i'm using it and update it
you miss 2 things(that i'm testing and working):
1 - after create the toolbar button, the IDE loses focus;
2 - nice update: maximize the window, seems IDE more clean

so on Connect.dsr, you have these function:
Code:
Private Sub AddButton()
   On Error GoTo ErrHandler
   'Add a button on ToolBar Items, opened, project:
   With gVBInstance.CommandBars(TOOLBARNAME).Controls.Add
      .Height = TOOLBAR_HEIGHT - 2
      .Style = msoButtonCaption
      .Width = 550
      .Enabled = False
   End With
   
   'the autor miss these 2:
   'Set focus and then maximize:
   gVBInstance.MainWindow.SetFocus
   gVBInstance.ActiveWindow.WindowState = vbext_ws_Maximize
ErrHandler:
End Sub
like you see: i added 2lines:
1 - is for IDE win focus
2 - maximizate the window

to be honest: i love these add-in.. . thanks for create it
thanks so much