I get the following error on exporter.Export():

{"Entry point was not found.":""}

public static void ExportGrid(XamDataGrid grid)
        {
            string file = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "FXMarry.xlsx");
            DataPresenterExcelExporter exporter = new DataPresenterExcelExporter();
            Workbook w = exporter.Export(grid, file, WorkbookFormat.Excel2007);
            w.Save(file);
            Process.Start(file);
        }

My first thought was that I have an old dll but I checked and I'm using these

InfragisticsWPF4

.v11.1

.DataPresenter.v11.1

.DataPresenter.ExcelExporter.v11.1

.Documents.Excel.v11.1