I had text in there, that much is for sure. Here's the deal:
I've been working on this project for the better part of a year, and am quite a ways into it - the dialogue is still rough draft-ish, but it flows well both literally and mechanically. I've replayed the scene in the screenshot close to a thousand times and it's never had that blank box show up untill I threw Slipknot's script in (not saying it is his fault, I'm the one whose ignorant to the workings of scripting) - in fact -all- dialogue has been replaced by that small box.
Perhaps I have to change something in the dialogue itself before it works? Or maybe I'll have to modify the script a little to suit my needs? In any case, I don't know a thing about what to do. In the words of Leia; "You [guys] are my only hope."