Before every Openfire release, Java JRE should be updated to the latest version (unless it was just released a few days ago, then i think previous to last version should be fine). After closing this ticket, file another, for the next release (clone this ticket).
1.8.0_72 is old enough.
Current version is 1.8.0_102
updated to 102, will leave open until release
shipping time, so we are current