06-16-2013, 01:19 PM
I've also had this happen. It seems to be whenever someone is gibbed while you're draining them. Sometimes it's just because they've taken sufficient damage. Several attempts were made to overcome this and the only way to bite someone again was to have my body destroyed, respawned and re-vampired by an admin (thanks for that, and hilariously enough i was a Late Join changeling when I respawned before i was Revamped).