I use Vivaldi as my browser. On rare occasions, BattleEye decides to stop the game from launching, telling me it's blocked vivaldi.exe. Seriously. If you ask me, BattleEye is a waste of resources and file size.
As it has happened again and I remembered, here is a screenshot. I didn't think to screenshot the other error window for some reason.
Occurred again, here is the other error window, G99. These two pop ups are the only thing the game shows aside from the game window being completely white until closing the pop ups, after which the game itself closes.