Can't run KH3 (Epic Games version) on Steam Deck... running into 'fatal error'

I downloaded Kingdom Hearts 3 on my Steam Deck through Heroic Launcher. Every time I try to boot up the game, whether it's through game mode or Desktop mode, the screen turns black and I get an error window that just says "Fatal Error".... Can anyone help me get this game running? It's the official version through the Epic Games store. LOG: https://0x0.st/8JdZ.log
20 Replies
HeroicBot
HeroicBot2w ago
To help you, we need a game log. Please see the following images on how to get it.
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exotic-emerald
exotic-emeraldOP2w ago
I just posted the log info: https://0x0.st/8JdZ.log
flat-fuchsia
flat-fuchsia2w ago
“Fatal error” is not a Linux or Heroic issue. I would suggest switching to GE-proton-latest, enabling umu and deleting the prefix folder though
exotic-emerald
exotic-emeraldOP2w ago
Thank you I will try to do what you said! Total noob when it comes to this stuff When you say deleting the prefix folder, do you mean the wine prefix folder? I updated to the latest GE-Proton and it atleast boots up the game now, but freezes at a black screen after showing the copyright logos (Disney, Square-Enix, etc) I also don't know what umu is... but will try to figure it out I see that "Disable UMU" is not checked, so i'm going to assume that means it's enabled by default So the prefix folder was required as the gaem is not able to launch at all now... do I run it from an alternate .exe? Idk if this matters but the game is downloaded to my microsd card
sunny-green
sunny-green2w ago
It actually is disabled by default, the checkbox is just wrong. Check & un-check it to enable umu The prefix folder is re-created automatically on game launch
exotic-emerald
exotic-emeraldOP2w ago
The problem is when I erase the prefix setting, the game won't launch at all.
sunny-green
sunny-green2w ago
Don't erase the value set in Heroic, delete the actual folder on your drive
exotic-emerald
exotic-emeraldOP2w ago
i'll try I don't want to delete anything important, you mean the folder named "Prefixes" that was in the win directory? It has a bunch of files in it so just want to make sure...
sunny-green
sunny-green2w ago
/home/deck/Games/Heroic/Prefixes/default/KINGDOM HEARTS III Re Mind
exotic-emerald
exotic-emeraldOP2w ago
right, that's what i'm looking at. so simply delete that prefixes folder in the heroic folder?
sunny-green
sunny-green2w ago
Delete this exact folder
exotic-emerald
exotic-emeraldOP2w ago
sorry i'm a noob... so the game folder containing heroic / prefixes/ etc?? Or just the prefixes folder containing default / KH3
sunny-green
sunny-green2w ago
Open /home/deck/Games/Heroic/Prefixes/default in your file manager, delete the KINGDOM HEARTS III Re Mind folder in there
exotic-emerald
exotic-emeraldOP2w ago
thank you Same result where it's a black screen after the copyright logos
flat-fuchsia
flat-fuchsia2w ago
that's a video playback issue, but I thought that this particular issue was fixed a while back. you'll need to install the mf codecs
git clone https://github.com/Kurumi78/mf-install
WINEPREFIX="/home/deck/Games/Heroic/Prefixes/default/KINGDOM HEARTS III Re Mind/pfx" PROTON="/home/outphase/.var/app/com.heroicgameslauncher.hgl/config/heroic/tools/proton/Proton-GE-latest" ./mf-install/mf-install.sh -proton
git clone https://github.com/Kurumi78/mf-install
WINEPREFIX="/home/deck/Games/Heroic/Prefixes/default/KINGDOM HEARTS III Re Mind/pfx" PROTON="/home/outphase/.var/app/com.heroicgameslauncher.hgl/config/heroic/tools/proton/Proton-GE-latest" ./mf-install/mf-install.sh -proton
exotic-emerald
exotic-emeraldOP2w ago
Can i run that code in terminal to install it?
flat-fuchsia
flat-fuchsia2w ago
yes
exotic-emerald
exotic-emeraldOP2w ago
Thank you for the help, I think I give up- nothing seems to be working and im getting too frustrated 😢
flat-fuchsia
flat-fuchsia2w ago
show your input and output from the terminal
exotic-emerald
exotic-emeraldOP2w ago
It's all good.... I just bought it on Steam lmfao. I had money in my Steam wallet anyways - i'd rather just not deal with this anymore 😆 But I truly appreciate everyone's help. Thank you!

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