The Totara 2.5.18 release contains bug fixes and improvements.

Here's the changelog:

Release 2.5.18 (2nd September 2014):
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Improvements:
    T-12735        Improved scalability for the program management page
    T-12943        Improved debugging on Audience rules tab

API Changes:
    T-12921        Changed generator class inheritance to resolve conflicts with PHP5.5

Bug Fixes:
    T-12917        Fixed wording of breadcrumbs when viewing learner details as a manager
    T-12464        Added error messages when importing course completion records with different grade on same day, user and course
    T-12872        Fixed Appraisal Stages so they can be completed on the final due day
    T-12890        Fixed Totara Sync to allow spaces in directory paths
    T-12775        Disabled incorrect trust text usage
    T-12511        Fixed get_roles_involved sql query when previewing an appraisal
    T-12910        Fixed required parameter checks on the edit scheduled reports page
    T-12767        Fixed backup and restore of Facetoface sessions without rooms
    T-12799        Fixed filtering of course name through multilang filter for Certificates
    T-12880        Fixed database error when deleting Programs
    T-12576        Fixed the handling of dates with a zero value in Reportbuilder filters
    T-12904        Fixed Totara Sync to allow @ in directory paths
    T-12445        Fixed URL encoding in Hierarchies
    T-12829        Fixed error on cron when a certification does not contain any courses
    T-12893        Fixed the TinyMCE Editor fullscreen mode on IE8