I'm pleased to announce the immediate availability of AlphaUserPoints version 1.5.1 for download.
This release corrects 8 major bugs :

# fixed division by zero on statistics user fontend
# fixed error in SQL syntax on AlphaUserPointsHelper::checkRankMedal()
# fixed time offset in raffle proceed
# fixed display only one message of congratulation on sending multiple invites with total points earned
# fixed on article showing by guest user
# fixed uninstall plugins and admin module before upgrade
# fixed language for upload image in level/rank (backend)
# fixed Medals List layout menuitem type show Users List layout menuitem type in Medals List top

^ changed notification message : add rule name for action
+ added show/hide referrer ID column on users list (frontend)
+ added label 'Rank' column on users list (frontend)
+ added missing var 'AUP_RAFFLE' in frontend languages