Added com.openexchange.groupware.update.tasks.CalendarAd dIndex2DatesMembersV2 entry to excludedupdatetasks.properties:



# v7.8.1 update tasks start here

# Creates indexes on tables prg_contacts and del_contacts to improve auto-complete
!com.openexchange.groupware.update.tasks.CalendarA ddIndex2DatesMembersV2