Ah ha! That sounds like the likely culprit! I know one story definitely has an LJ bobblehead in the beginning notes and that one would load, but had really weird formatting issues (like a tag didn't get closed) and took forever to turn a page. This one is the one that definitely caused it to crash multiple times as an LRF and shows up on my reader as only having one page and then doesn't open as epub. Works fine as an RTF, although the text is awfully small.