Large PDFs cause crashes

I'm trying to load a PDF, but whenever I try and open it, Book Reader crashes. It finishes the loading sequence, and I can see it in the list of things I'm currently reading, but the first open and all opens through that main menu cause it to crash. I assume it has to do with the size, since this is the largest PDF I've attempted to open so far, but I have a 200MB textbook I'm loading as of now. This file is about 65MB.