If my Lua knowledge is as good as it used to be, I'd say that the problem lies in the fact that you used an old Lua/XML file. Like the one from 'locale-enGB.mpq' when you really need the one from 'patch-3.mpq'. This will make an error if you pick the old one :S
But what the error actually says is that it expected text, where it got nothing. Explain? Sure. Here's an example:
Frame:SetText("Im random!
")
What the error says is that it had expected something like this:
Frame:SetText("Im random!
", "AW HELL NO! ^_^")
So in short, it expected another value after whatever it currently contains.
But in reality, the actual problem might just be that your using an old version of the Lua/XML file. Which ofcause makes it error x)
Thanks
Keta