I’ve marked your post as the solution, but haven’t thanked you yet. Thank you, hopefully others go directly to your post as it works as expected.
Same issue as of today.
wine-9.22 (Staging)
6.12.9-arch1-1
For Linux Nobara users:
Tried a couple of different Proton versions (Proton 7, Proton 8, Proton 9, Proton Experimental, GE-Proton etc.) on Steam Deck, none of them worked for me, update is still crashing.
In the lutris discord some people have had luck using the umu-launcher to use the very latest proton-ge to install the game, and then switching back to lutris’s default runner (wine-ge).
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I’ve been struggling using Proton 8.0, I’ll give this a crack, thank you for the share.
I’m facing the same issue. Running on Linux Mint 22 XFCE running Bottles
Looks, at least somewhat, like this is working, here is a thread on the US forums that reiterates this solution. https://us.forums.blizzard.com/en/wow/t/couldnt-update-after-111-now-cant-install/2044960