An old addon needs fixed

[Rawcard]

I have an old addon from 2012 and it works in classic but part of it stopped working in Classic Wrath. Are there any LUA coders here that could look into it and try to fix it? message me and I can send you the addon for you to look at. it is very lightweight and works wonders. please help me as I am not a coder and do not know how to fix it exactly.