[ADDON_ACTION_BLOCKED] AddOn 'Mapster' tried to call the protected function 'UNKNOWN()'.

[diab64]

26x [ADDON_ACTION_BLOCKED] AddOn 'Mapster' tried to call the protected function 'UNKNOWN()'.
[!BugGrabber/BugGrabber.lua]:583: in function '?'
[!BugGrabber/BugGrabber.lua]:507: in function <!BugGrabber/BugGrabber.lua:507>
[C]: ?
[Mapster/Libs/LibWindow-1.1-18/LibWindow-1.1.lua]:178: in function 'RestorePosition'
[Mapster/Mapster.lua]:217: in function 'SetPosition'
[Mapster/Mapster.lua]:243: in function <Mapster/Mapster.lua:240>
[tail call]: ?
[C]: in function 'SynchronizeDisplayState'
[Blizzard_WorldMap/QuestLogOwnerMixin.lua]:158: in function 'SetDisplayState'
[Blizzard_WorldMap/QuestLogOwnerMixin.lua]:84: in function 'HandleUserActionMinimizeSelf'
[Blizzard_WorldMap/Blizzard_WorldMap.lua]:106: in function 'minimizedCallback'
[Blizzard_SharedXML/Mainline/SharedUIPanelTemplates.lua]:678: in function 'Minimize'
...[C]: ?
[C]: ?
[C]: in function 'Show'
[Blizzard_UIParentPanelManager/Shared/UIParentPanelManager.lua]:817: in function <...UIParentPanelManager/Shared/UIParentPanelManager.lua:803>
[C]: in function 'ShowUIPanel'
[Blizzard_WorldMap/QuestLogOwnerMixin.lua]:115: in function 'SetDisplayState'
[Blizzard_WorldMap/QuestLogOwnerMixin.lua]:51: in function 'HandleUserActionToggleSelf'
[Blizzard_WorldMap/Blizzard_WorldMap.lua]:567: in function <...rfaceBlizzard_WorldMap/Blizzard_WorldMap.lua:562>
[C]: in function 'ToggleWorldMap'
[TOGGLEWORLDMAP]:1: in function <[string "TOGGLEWORLDMAP"]:1>

Locals:
self = <table> {
}
event = "ADDON_ACTION_BLOCKED"
addonName = "Mapster"
addonFunc = "UNKNOWN()"
name = "Mapster"
badAddons = <table> {
 Mapster = true
 DeModal = 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'."
}