I figured it out, sorta. By debugging the code on your install page, I found out that 19 was the version of the lite editor file I wanted. That solves the problem with the Example object not being defined, but introduces a new one: anytime you insert an open curly bracket, the code throws an Error. This happens whether you insert it by typing it, or clicking a toolbar button. Given how ubiquitous that character is, I can't figure out how no one noticed this. It renders the editor pretty much useless. At this point, with all of the problems I've found, I'm going to recommend that we look elsewhere for our math equation needs.