For those updating to the new UT Drupal Kit 2.5 — the icon font in the Forty Acres theme has been renamed in this release, so if you have a STARTERKIT-based subtheme from an older version of the Drupal Kit, you may need to make some minor adjustments in your subtheme.
Documentation for this issue is available on the wiki.
If you run into trouble, please email drupalkit-support@utlists.utexas.edu to open a ticket.