Class method

System.Object CMS.DocumentEngine.Web.UI.TransformationMethods.GetFileUrl(CMS.MacroEngine.EvaluationContext, System.Object[])

was removed. You can use method

System.Object CMS.DocumentEngine.Web.UI.TransformationMethods.GetAttachmentUrlByDocumentId(CMS.MacroEngine.EvaluationContext, System.Object[])

instead.