74x Experiencer\modules\experience.lua:460: attempt to call global 'IsReferAFriendLinked' (a nil value)
Experiencer\modules\experience.lua:460: in function HasRecruitingBonus' Experiencer\modules\experience.lua:490: in function CalculateXPMultiplier'
Experiencer\modules\experience.lua:548: in function CalculateQuestLogXP' Experiencer\modules\experience.lua:195: in function GetText'
Experiencer\core.lua:574: in function RefreshText' Experiencer\core.lua:610: in function Refresh'
Experiencer\core.lua:290: in function RefreshModule' Experiencer\core.lua:181: in function Refresh'
Experiencer\modules\experience.lua:560: in function ?' ...Ons\Ace3\CallbackHandler-1.0\CallbackHandler-1.0-7.lua:119: in function <...Ons\Ace3\CallbackHandler-1.0\CallbackHandler-1.0.lua:119> [C]: ? ...Ons\Ace3\CallbackHandler-1.0\CallbackHandler-1.0-7.lua:29: in function <...Ons\Ace3\CallbackHandler-1.0\CallbackHandler-1.0.lua:25> ...Ons\Ace3\CallbackHandler-1.0\CallbackHandler-1.0-7.lua:64: in function Fire'
Ace3\AceEvent-3.0\AceEvent-3.0-4.lua:120: in function <Ace3\AceEvent-3.0\AceEvent-3.0.lua:119>

Apparently IsReferAFriendLinked was renamed to IsRecruitAFriendLinked.

I sooo reaally like all the pointless busywork Blizzard puts addon creators through, without having proper documentation either.

Should be fixed for v3.1.1.