If you equip the Stone of the Drowned with 0 Barrier it causes the game to crash. Adding a different accessory first that provides barrier seems to allow you to equip Stone of the Drowned without crashing.
Since I cant reproduce this and no crash logs were provided I'm going to have to close this. If you're able to reproduce this again please submit a properly formatted report with logs attached.
If you equip the Stone of the Drowned with 0 Barrier it causes the game to crash. Adding a different accessory first that provides barrier seems to allow you to equip Stone of the Drowned without crashing.