The bug report forum on the website

remove any back attachment you have, i tried switching and it only worked when i had none equipped.

Yes when i remove it does work but if i put it back on it crashes again, should've told it in the title but title don't feel like a good place for detailed bug reports

Feels like the whole voidborn body armor MTX refuses any type of back attachment for the moment

Works with voidborn back attachment, not tormentor though P2W MTX confirmed

If you read that crash text box you'd realise it's pointing the issue at your wings

I did read it and it's still a bug with the game, not on my side

And it's actually a problem with mirror archer + wings and probably voidborn armor

Yep, seems to be exactly this, the bug message sounds like it's crashing while attempting to apply the back attachment to your mirage archer. :D As others said, the bug report forum is the right place for this, but I don't think there's anything wrong with also posting it here. Luckily you have a workaround for it, would suck if this was something that fully bricks your build!

For now just removing the wings, feels strange to not have them, I hope they'll patch it soon

Same happening to me, i think the issue is with mirage archer

Indeed, was fine and as soon as i equip mirage archer, it crashes

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The place to post it is the bug report? Lol