Adobe Reader XI 11.0.07 freezes intermittently on Windows 8.1 when doing "Save As"

Adobe Reader XI 11.0.07 freezes intermittently on Windows 8.1 when doing "Save As". This occurs when opening a file from Outlook or from the web. I have IE 11 and Microsoft Office 365 installed on a Toshiba Satellite P50. Windows and Office have the latest updates. There are no error messages. I can clear Adobe Reader with Task Manager. Opening the PDF again has the same result in that it may hang or work correctly when doing a “Save As” again. This occurs intermittently when charging the laptop or when on battery.