Released on December 9, 2009, version 3.91 introduced several technical refinements: 7-Zip Improvements
The string "WinRAR.v3.91.x64.Incl.Keyfilemaker-CORE--tracker" WinRAR.v3.91.x64.Incl.Keyfilemaker-CORE--tracker
: Added support for unpacking 7-Zip archives created with the Released on December 9, 2009, version 3