Random crash, error 6025 - pure virtual function call

The game is running great for me, but since early access started the client has been crashing randomly with the same error code each time. I've searched all over and it seems nobody else has reported this sort of thing for FFXIV, but it seems to be a fairly common error in C++ programs. It could very well be something wrong on my end, but I wouldn't know where to start looking.

There doesn't appear to be any commonality between the crashes. I've gone through several of them now, and I was doing something completely different each time. Talking to NPCs, battling monsters, just walking around, and so on. It hasn't happened while standing still and doing nothing at all yet, but I'm not prepared to rule it out.