KNX virtual CRASH from the start after importing segment coupler project from official page

I have used KNX VIRTUAL 2.6.0 with ETS 6.2

I had imported a D5 coupler project from this official page to add devices (1.0.x addressing), since I could not program it normally under 1.1.x physical directions.

After some time KNX virtual cannot start even from a fresh download.

Messages are : Not possible to set up D20. Not possible to join D20 to the multicast group.

See the end of this message for details on invoking 
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at KnxVirtualForm.MainForm.ReadDeviceMemoryImageFromFile(Int32 DVC)
   at KnxVirtualForm.MainForm.Topology_Set()
   at KnxVirtualForm.MainForm.InterfaceSettingsOK_Click(Object sender, EventArgs e)
   at System.Windows.Forms.Control.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ButtonBase.WndProc(Message& m)
   at System.Windows.Forms.Button.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

************** Loaded Assemblies **************
mscorlib
    Assembly Version: 4.0.0.0
    Win32 Version: 4.8.9310.0 built by: NET481REL1LAST_C
    CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/mscorlib.dll
----------------------------------------
KV
    Assembly Version: 1.0.0.0
    Win32 Version: 2.6.0.0
    CodeBase: file:///C:/Users/rirui/OneDrive%20-%20Conselleria%20d'Educaci%C3%B3/faitanar/TPIDA/2025_2026/UNIDAD%202_%20KNX/kv-VIRTUAL_ets6/kv-20240613%20(1)/KV.exe
----------------------------------------
System.Windows.Forms

Any ideas????