
My son and I both have the same model of MacBook Pro you and executed both El Capitan without problem. Any computer capable of running 10.8.5 will run 10.11. The latest version of Mac OS is 10.11 'El Capitan' and the upgrade only currently available free. How to upgrade to Version 10.8.5 my MacBook Pro software version 10.7.5 "Microsoft Windows 8, 7 and VISTA do not support kernel mode print drivers.

"WinFax PRO and TalkWorks PRO requires a compatible OS of Windows such as Windows 9 x, Windows NT, Windows 2000 and Windows XP (32-bit only) that will support (Type 2) kernel-mode printer drivers. A web based community support forum is for users of WinFax PRO. » Symantec has abandoned sales and WinFax PRO support June 30, 2006. Technical support for WinFax PRO from 2002 to 2006 was entrusted to third from Oregon, Texas, and the India Call Center later. "The end of 2001, the other WinFax PRO developers and support staff have ended from their positions.

WinFax (also known as WinFax PRO) is a software product Microsoft Windows designed for computers with fax modems communicate directly to stand-alone fax machines or other computers in the same way."
