PrintTicket 提供程序无法检索 PrintCapabilities。Win32 错误: -2147418113

PrintTicket 提供程序无法检索 PrintCapabilities。Win32 错误: -2147418113,打印的时候报错，操作系统win7 32位，不知道啥原因。

PrintDialog dialog = new PrintDialog();           
            if (dialog.ShowDialog() == true)
            {
                dialog.PageRangeSelection = PageRangeSelection.AllPages;
                dialog.UserPageRangeEnabled = true;
                PrintTicket pt = dialog.PrintTicket;
                pt.PageMediaSize = new PageMediaSize(PageMediaSizeName.ISOA4);//A4纸
                pt.PageOrientation = PageOrientation.Portrait;
                try
                {
                    dialog.PrintVisual(printArea, "摇号结果打印");
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message+",打印机连接异常,请检查");
                    return;
                }
            }