System.ArgumentOutOfRangeException: Length cannot be less than zero.
Parameter name: length
at System.String.Substring(Int32 startIndex, Int32 length)
at dataverse.web.controls.yppo.aeg.Right_Exhibitions.myRenderContents(HtmlTextWriter writer)
at dataverse.web.controls.yppo.aeg.Right_Exhibitions.RenderContents(HtmlTextWriter writer)