Need help updating a old addon

[Thevolget]

I've come to like the addon Autograts since it helps with making it seem like i'm taking the time to congratulate my guild members when they level. The problem is, the addon was broken after 4.0.1's removal of the "this, arg1, arg2, argX". I've been trying to repair the addon into a working state, however all of the fixes that I know of aren't working. I'm not asking for someone here to rewrite it, but if anyone can glance over and let me know what i'm needing to correct (quite possibly alot) so I can get the addon working again.

autograts.xml

<Ui xsi:schemaLocation="http://www.blizzard.com/wow/ui/">
	<Script file="autograts.lua"/>
	<Frame name="AGFrame">
		<Scripts>
			<OnLoad>
				AG_OnLoad();
			</OnLoad>
			<OnEvent> 
				AG_OnEvent(event);
			</OnEvent>
		</Scripts>
	</Frame>
</Ui>

autograts.lua
The code was too long to put in the post, it's at the link below

http://pastebin.com/VymEwrqg

[Duugu]

Any errors?

Change

AG_OnEvent(event)

into

AG_OnEvent(event, arg1, arg2, arg3)

and

AG_OnLoad()

into

AG_OnLoad(self)

in both files

[Thevolget]

Well that fixed the loading issue, now it loads but it triggers an LUA error whenever someone talks in guild chat (due to the registering of CHAT_MSG_GUILD). Seems to now be passing a "nil" value into the string.gsub(m,"%p+","")

[Dridzt]

Lua:

function AG_OnEvent(self, event, ...)
        local arg1, arg2, arg3 = ...
        if (event == "VARIABLES_LOADED")then AG_Init();
        elseif (AGenabled and event == "CHAT_MSG_GUILD" ) then AG_GuildText(arg1, arg2, arg3);
        elseif (event == "GUILD_ROSTER_UPDATE")then AG_GotRoster();
        end
        if (AGtimer) then
                AG_CheckDelayedMsg();
        end
end

Xml:

<OnEvent> 
	AG_OnEvent(self, event, ...);
</OnEvent>

[Thevolget]

I can't say how much i appreciate the help guys, it seems to be functioning fine now.