Currently there is a bug with transmuting weapons that may give you an unimplemented, bugged weapon. Equipping this weapon to a character has been known to cause crashes upon mission load and much wasted stamina.

If you obtain any of these weapons, DO NOT EQUIP THEM. Submit a bug report to Square Enix immediately and include the name of the weapon you’ve obtained. This issue needs visibility so it can be fixed ASAP.

If you’ve equipped a bugged weapon, simply reload the client, start from the bridge, and unequip the weapon. You should be able to play as normal after that. I wouldn’t destroy the weapons or anything at this point, I’m sure this is a bug that will get fixed.

I wanted to give this some visibility so people don’t get discouraged if this happens to them. Worst case scenario, you relaunch your game, eat the stamina cost, and unequip the weapon from the character.

I’m not sure if it is only 5 star weapons, but I know it is at least some 5 star weapons. I’ve tested several 3 and 4 star weapons and those seem largely unaffected (though of course there are a lot more than I can personally test so who knows).

Right now, some weapons gained through transmutation are locking up the client in single player and multiplayer. If you encounter such a weapon, follow the steps in bold face in the top edit of this post to regain the ability to play, then submit a bug report.

The weapon I experienced this with was the 5 star weapon “Bloodfeast Knuckles.”

Weapons known to be causing this effect (I’ll add to this as I become aware of them):

• A Staff with Japanese text
• Bloodfeast Knuckles (uh…knuckles)
• Veinslay (OHS)
• Magatsu Divine Blades (Daggers)
• Gladiator (B&S Sword with Japanese text) (There is a report in the comments of this weapon working fine on Stephen, but I can’t personally confirm since I don’t have this)
• Slayers of Men (Daggers)
• Phase Magnum (Gun)
• Silent Killer
• Bloodring Knuckles

Post comments here if you happen across more nonfunctional weapons to hopefully save more poor saps from this bug.

Edited:

There is now a news post saying that they have removed the possibility of acquiring these weapons. We can transmute again!

• Compensation for affected players: 5 Star weapon ticket, 2000 Gems
• Compensation for all players: 500 Gems

That’s pretty fair for anyone who didn’t do like I did and make several 5 star weapons. I’m still pretty OK with a 5 star weapon and 2k Gems. They’ll be removing these in a maintenance so don’t use them until then.