diff --git a/Libs/zzAddOn/zzAddOn.lua b/Libs/zzAddOn/zzAddOn.lua
index 9b97239..f52bbf5 100644
--- a/Libs/zzAddOn/zzAddOn.lua
+++ b/Libs/zzAddOn/zzAddOn.lua
@@ -1,4 +1,4 @@
-local lib = LibStub:NewLibrary("zzAddOn", 4)
+local lib = LibStub:NewLibrary("zzAddOn", 5)
 if not lib then return end
 local config = LibStub:GetLibrary("zzConfig")
 lib['callbacks'] = lib['callbacks'] or LibStub:GetLibrary("CallbackHandler-1.0"):New(lib)
@@ -90,6 +90,16 @@ end
 function lib:NewAddOn(addonName, addonTable)
 	local specs = self['specs']
 	local childName = specs['name']
+	if(lib['addons'][childName]) then
+		local oldchild = lib['addons'][childName]
+		local parent = oldchild:GetParent()
+		if(parent) then
+			print(format("Error: %s already loaded by %s", childName, parent['specs']['name']))
+		else
+			print(format("Error: %s already loaded", childName))
+		end
+		return
+	end
 	if(type(childName) == 'string') then
 		self.GetAddOnTable = function() return addonTable end
 		lib['addons'][childName] = self
@@ -113,7 +123,7 @@ function lib:Embed(target)
     target[name] = lib[name]
   end
 end
-for target, _ in pairs(lib['addons']) do
+for _, target in pairs(lib['addons']) do
   lib:Embed(target)
 end
 lib['events']:RegisterEvent('ADDON_LOADED')