I have posted the 2017 team logo file and 2017 team fields files in the "Misc. Files" link on the home page. You can find the link in the upper left hand corner of the home page and/or http://www.aaroncraneinstitute.com/football/miscfiles/
Save each file to your computer, then:
Team Logos File - Extract the contents of the file, just as you would the weekly league file, to your dksports\football\TeamLogos folder
Team Fields File - Extract the contents of the file, just as you would the weekly league file, to your dksports\football\Stadiums folder