The Totara 2.6.4 release contains bug fixes and improvements.

Here's the changelog:

Release 2.6.4 (1st July 2014):
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Improvements:
    T-12605        Added logic to serve older versions of jquery to older versions of IE
    T-12497        Improved internationalisation for the display of audience rules
    T-12527        Added username of creator to Facetoface report and improved logging of attendees actions

Database Upgrades:
    T-12578        Added the ability to continue appraisals with missing roles
    T-11887        Fixed display of appraisals after a user has been deleted

Bug Fixes:
    T-12521        Fixed dynamic audiences not updating if the cohort enrolment plugin is disabled
    T-12538        Fixed category drop down selector not working correctly when creating programs
    T-12570        Fixed the sending of Program messages when completion is set relative to an action
    T-12479        Fixed the activate link incorrectly showing while viewing closed feedback360
    T-12509        Fixed historical course completion records not showing on the my team tab
    T-12563        Changed the default "temporary manager restrict selection" setting to "all users" for new installs
    T-12572        Added check to ensure generator columns can not be added to the same report multiple times
    T-12498        Fixed the display of custom field names for audience rules
    T-12156        Fixed cancellation message when F2F activity email notifications are turned off
    T-12571        Fixed the view hidden courses capability in the enhanced catalog
    T-12488        Fixed dynamic audiences showing on the 'add to audiences' option in bulk user actions
    T-12465        Fixed duplicate records issue when importing more than 250 course completion records
    T-12500        Fixed the incorrect use of urldecode function on page parameters
    T-12372        Fixed learning plan comments linking to the wrong components
    T-12387        Fixed the page title for program/certification searches
    T-12531        Fixed the formatting of the heading for facetoface attendance exports