C++ Runtime error...

Periodically, ever since open beta (when I started playing), I've had FF14 crash, with a popup saying "C++ Runtime Error: R6025 -pure virtual function call." It happens seemingly without warning. I could be in a menu or walking through a field and boom, crash. I think it has even happened while in the character select menu.

I've tried running the C++ redist from microsoft, and I've reinstalled the game twice. I can't think of anything else to do. I've never had this happen to any other program on this computer. What's the deal? This is going suck hard if it ever happens in the middle of a dungeon or raid.