See the end of this message for details on invoking 

just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************

System.InvalidCastException: La conversión del tipo 'DBNull' en el tipo 'String' no es válida.

   at Microsoft.VisualBasic.CompilerServices.Conversions.ToString(Object Value)

   at CrmMacri.FrmPresupuestos.GrPresupuestosRenglones_DoubleClickCell(Object sender, DoubleClickCellEventArgs e)

   at Infragistics.Win.UltraWinGrid.UltraGrid.OnDoubleClickCell(DoubleClickCellEventArgs e)

   at Infragistics.Win.UltraWinGrid.UltraGrid.FireEvent(GridEventIds id, EventArgs e)

   at Infragistics.Win.UltraWinGrid.GridCellEmbeddableEditorOwnerInfoBase.OnEditorDoubleClick(EmbeddableUIElementBase embeddableElem, EmbeddableClickEventArgs e)

   at Infragistics.Win.EditorWithText.Infragistics.Win.IEmbeddableTextBoxListener.OnDoubleClick()

   at Infragistics.Win.EmbeddableTextBox.OnDoubleClick(EventArgs e)

   at System.Windows.Forms.TextBoxBase.OnMouseUp(MouseEventArgs mevent)

   at Infragistics.Win.EmbeddableTextBox.OnMouseUp(MouseEventArgs e)

   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)

   at System.Windows.Forms.Control.WndProc(Message& m)

   at System.Windows.Forms.TextBoxBase.WndProc(Message& m)

   at System.Windows.Forms.TextBox.WndProc(Message& m)

   at Infragistics.Win.EmbeddableTextBoxWithUIPermissions.WndProcInternal(Message& m)

   at Infragistics.Win.EmbeddableTextBoxWithUIPermissions.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: 4.8.4110.0 built by: NET48REL1LAST_B

    CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/mscorlib.dll

----------------------------------------

CrmMacri

    Assembly Version: 2020.1.0.0

    Win32 Version: 2020.01.0.0

    CodeBase: file:///C:/Program%20Files%20(x86)/Macri%20%26%20Asociados%20S.A/CRM/CrmMacri.exe

----------------------------------------