WowAce

Version - Release R751 (Arkinventory is 3.12.07)

Both addons up to date, client restarts done. 

Just need to log on

error as below, relevant lines in bold. 

52x [ADDON_ACTION_FORBIDDEN] AddOn 'ArkInventory' tried to call the protected function 'AceEvent30Frame:RegisterEvent()'.
[!BugGrabber/BugGrabber.lua]:583: in function '?'
[!BugGrabber/BugGrabber.lua]:507: in function <!BugGrabber/BugGrabber.lua:507>
[C]: in function 'RegisterEvent'
[ArkInventory/Externals/Ace3/AceEvent/AceEvent-3.0-4.lua]:33: in function 'OnUsed'
[Ara_Broker_Reputations/libs/CallbackHandler-1.0-8.lua]:132: in function 'RegisterEvent'
[Rarity/Core/EventHandlers.lua]:67: in function 'Register'
[Rarity/Core.lua]:210: in function 'DoEnable'
[Rarity/Core.lua]:151: in function <Rarity/Core.lua:150>
[C]: ?
[ArkInventory/Externals/Ace3/AceAddon/AceAddon-3.0-13.lua]:66: in function <...rkInventory/Externals/Ace3/AceAddon/AceAddon-3.0.lua:61>
[ArkInventory/Externals/Ace3/AceAddon/AceAddon-3.0-13.lua]:523: in function 'EnableAddon'
[ArkInventory/Externals/Ace3/AceAddon/AceAddon-3.0-13.lua]:626: in function <...rkInventory/Externals/Ace3/AceAddon/AceAddon-3.0.lua:611>
[C]: ?
[C]: in function 'LoadAddOn'
[ArkInventory/Core/ArkInventoryClient.lua]:923: in function 'LoadAddOn'
[ArkInventory/Core/ArkInventory.lua]:13679: in function 'LoadAddOn'
[ArkInventory/Core/ArkInventory.lua]:13702: in function 'BlizzardAPIHook'
[ArkInventory/Core/ArkInventory.lua]:3325: in function <ArkInventory/Core/ArkInventory.lua:3282>
[C]: ?
[ArkInventory/Externals/Ace3/AceAddon/AceAddon-3.0-13.lua]:66: in function <...rkInventory/Externals/Ace3/AceAddon/AceAddon-3.0.lua:61>
[ArkInventory/Externals/Ace3/AceAddon/AceAddon-3.0-13.lua]:523: in function 'EnableAddon'
[ArkInventory/Externals/Ace3/AceAddon/AceAddon-3.0-13.lua]:626: in function <...rkInventory/Externals/Ace3/AceAddon/AceAddon-3.0.lua:611>

Locals:
self = <table> {
}
event = "ADDON_ACTION_FORBIDDEN"
addonName = "ArkInventory"
addonFunc = "AceEvent30Frame:RegisterEvent()"
name = "ArkInventory"
badAddons = <table> {
ArkInventory = true
}
L = <table> {
ADDON_CALL_PROTECTED_MATCH = "^%[(.*)%] (AddOn '.*' tried to call the protected function '.*'.)$"
NO_DISPLAY_2 = "|cffffff00The standard display is called BugSack, and can probably be found on the same site where you found !BugGrabber.|r"
ERROR_DETECTED = "%s |cffffff00captured, click the link for more information.|r"
USAGE = "|cffffff00Usage: /buggrabber <1-%d>.|r"
BUGGRABBER_STOPPED = "|cffffff00There are too many errors in your UI. As a result, your game experience may be degraded. Disable or update the failing addons if you don't want to see this message again.|r"
STOP_NAG = "|cffffff00!BugGrabber will not nag about missing a display addon again until next patch.|r"
ADDON_DISABLED = "|cffffff00!BugGrabber and %s cannot coexist; %s has been forcefully disabled. If you want to, you may log out, disable !BugGrabber, and enable %s.|r"
NO_DISPLAY_STOP = "|cffffff00If you don't want to be reminded about this again, run /stopnag.|r"
NO_DISPLAY_1 = "|cffffff00You seem to be running !BugGrabber with no display addon to go along with it. Although a slash command is provided for accessing error reports, a display can help you manage these errors in a more convenient way.|r"
ERROR_UNABLE = "|cffffff00!BugGrabber is unable to retrieve errors from other players by itself. Please install BugSack or a similar display addon that might give you this functionality.|r"
ADDON_CALL_PROTECTED = "[%s] AddOn '%s' tried to call the protected function '%s'."
}

I'm guessing that's the same issue as mentioned here: https://github.com/WowRarity/Rarity/issues/931