Class method

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

was removed. You can use method

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

instead.