Running 2 scripts with XLua?

I'm relatively new to using XLua. Using this tutorial:

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I got coroutines and yielding working. But notice that tutorial loads 2 lua files: "data.lua" and "a_script.lua." The thing is, the "a_script.lua" file never actually does anything, and I need some similar functionality where I can load in a "Base.lua" file with all my global members and functions, and then load smaller scripts for individual cutscenes, etc. I can't get the "runscript" function in a 2nd script to actually run.

I've seen this done in other clickteam games, so surely there's a way?

I found I can get another script running by loading it in the Lua file itself, using:

function LoadFile(file)
    dofile(file);--Filename
    runscript();--This is the coroutine function
end

However, if I try to yield that script, it gives the error: "attempt to yield across metamethod/c-call boundary"

I look that up and it's something about calling yield in a metamethod, but the definition of "metamethod" doesn't sound like something I'm using. I also wouldn't know how to release the script once I'm done with it.

Edit: Putting the coroutine creation into the subscript itself (rather than the base) allows it to work, though a bit cumbersome. So the end of every script file would have:

script = coroutine.create(runscript)