Authors CurseForge

I have a couple of questions regarding communication of guild positions.

1.)
Question: Is there any other library/addon besides LibGuildPosition-1.0 which does this?


2.)
Background information:
LibGuildPosition-1.0 fires a callback of the following form:

-- somehere in addon:OnEnable
LibGuildPositions.RegisterCallback(self, 'Position', function(...)
    self:OnGuildPositionChange(...)
end)

function addon:OnGuildPositionChange(event, unitName, zoneX, zoneY, zone)
    -- do stuff
end

Where event will be the string "Position", unitName will be the name of a guild member, zoneX and zoneY range from 0 to 1 and zone will be the map texture name of a zone, for example "StormwindCity" as returned by GetMapInfo.

Question: Is there an easy way to translate the texturename to a areaID (as returned by GetCurrentMapAreaID

The only approach, besides hard coding, that comes to mind is to iterate over every map with SetMapByID and compare the result of GetMapInfo.


3.)
Background Information:

-- [...]
function addon:OnEnable()
    -- [...]
    LibGuildPositions.RegisterCallback(self, 'Position', function(...)
        self:Debug("Position")
        self:OnGuildPositionChange(...)
    end)
    -- [...]
    self:Debug("LibGuildPositions-1.0 callbacks registered.")
end
-- [...]
function addon:OnGuildPositionChange(event, unitName, zoneX, zoneY, zone)    
    self:Debug(("OnGuildPositionChange(unitName=%s, zoneX=%f, zoneY=%f, zone=%s)"):format(unitName, zoneX, zoneY, tostring(zone)))
    error("why is this never executed?")
    -- [...]
end

I can see that registration was done ("LibGuildPositions-1.0 callbacks registered." appears in chat).
Question: Why is neither "Position" nor the other debug mesage ever printed. And why does the error never occur?
I can not totally exclude the possibility that my guild members are doing something wrong. However, at least two have the library stand alone installed.

Edit: After additional testing it seems that LibGuildPositions-1.0 does not work standalone. Or my guild mates failed to install it stand alone. Embedded in my addon it works.