Please change the code, line 576:
if (damageEntryType == DamageEntryType.NPC && !string.IsNullOrEmpty(firstDamageDealer))
to
if (damageEntryType == DamageEntryType.NPC && !string.IsNullOrEmpty(firstDamageDealer) && damageGroups.Count > 1)
it will not show the firstlock message when shooter was only alone
First lock message for single shooter
also when 2 mans shoot the target (not in team) they are not receiving the damage report, only one person gets message(probably first locker but only 1 person in the list)