Strange Error, Cant find the LUA

[briggsy]

Hi, im making a simple mod, (not my first) however for some strange reason when i load it in WOW i get an error saying im calling an undefined global, (the OnLoad() i double check my spelling everything is fine, i try to debug it by making another function, same thing. i then turn to the <Script file="mymod.lua"/>, double check it, its fine. however im almost sure this is the problem, as it seems the XML file cannot run my LUA script even if my LUA script only has one small function for OnLoad. im at my whits end, anyone have an idea what could be causing this?