Well, that's odd. I turned them back on and then off again and I still get crashes.

I did have a duplicate highlight of sorts in a way, since I was using $me for a highlight, plus my base username for changing nicks to get highlights if I used something out of the ordinary like a quick status nick.

But anyway, now I'm not sure why it was lasting fine for that point I had Highlight and Notify off. These crashes are utterly confusing me.