[Bug]: Issues with steam flatpak install

[EmehVukii]

What happened?

was trying to setup DS3 archieplago on CachyOS, which does work on linux with a native steam installation, but I couldn't get it to work with flatpak. Wine is unable to find the correct paths - if i had to take a guess - but nothing i did fixed it

Version

v0.11.0

What operating system are you seeing this problem on?

Linux

Relevant log output

INFO me3: version="0.11.0" commit_id="40583deb10ac8679c94b95c566b520f3f8bba242"
 INFO launch: me3::commands::launch: resolved game game=Game(DarkSouls3) game_options=GameOptions { boot_boost: None, skip_logos: None, skip_steam_init: None, exe: None } profile_options=ProfileOptions { start_online: None, disable_arxan: None, no_mem_patch: None }
 INFO launch: me3::commands::launch: wrote attach config attach_config_file=NamedTempFile("/home/emehvukii/.var/app/com.valvesoftware.Steam/cache/me3/.tmpltdgXo") attach_config=AttachConfig { game: DarkSouls3, natives: [Native { path: ModFile("/mnt/m2/ds3 archi/ds3_archipelago.dll"), optional: false, enabled: true, load_before: [], load_after: [], initializer: None, finalizer: None, load_early: false }], early_natives: [], packages: [Package { id: None, enabled: true, path: ModFile("/mnt/m2/ds3 archi/randomizer"), load_after: [], load_before: [] }], savefile: Some("ap-52715825226559348179.sl2"), cache_path: Some("/home/emehvukii/.var/app/com.valvesoftware.Steam/cache/me3"), suspend: false, boot_boost: true, skip_logos: true, start_online: false, disable_arxan: false, mem_patch: true, skip_steam_init: false }
 INFO launch: me3::commands::launch: monitor pipe created path="/tmp/.tmpsf6gVh"
 INFO launch: me3::commands::launch: created log file log_file_path="/home/emehvukii/.var/app/com.valvesoftware.Steam/data/me3/logs/me3-config/2026-06-18_21-05-27.log"
 INFO run: me3_launcher: Launcher started
 INFO run: me3_launcher: Parsed launcher args args=LauncherVars { exe: "/mnt/m2/SteamLibrary/steamapps/common/DARK SOULS III/Game/DarkSoulsIII.exe", host_dll: "/mnt/m2/ds3 archi/bin/win64/me3_mod_host.dll", host_config_path: "/home/emehvukii/.var/app/com.valvesoftware.Steam/cache/me3/.tmpltdgXo" }
 INFO run: me3_launcher: Starting game at "/mnt/m2/SteamLibrary/steamapps/common/DARK SOULS III/Game/DarkSoulsIII.exe" with DLL "/mnt/m2/ds3 archi/bin/win64/me3_mod_host.dll"
 INFO run:launch: me3_launcher::game: trace_id=Some("275b66053994a76142b0f5cd3a755854-4bca0442c87562cb-0")
 INFO run:attach: me3_launcher::game: attaching to process pid=316
 INFO me3_mod_host: Beginning host attach
 INFO me3_mod_host: Attaching to DARK SOULS™ III 1.15.2.0 Worldwide
 INFO me3_mod_host: will attempt to disable Arxan code protection game=darksouls3 attach_config.disable_arxan=false
DEBUG defer_init:schedule_after_arxan: dearxan::disabler::game: game path: "S:\\steamapps\\common\\DARK SOULS III\\Game\\DarkSoulsIII.exe"
DEBUG defer_init:schedule_after_arxan: dearxan::disabler::game: preferred base address: 140000000
DEBUG defer_init:schedule_after_arxan: dearxan::disabler::steamstub: SteamStub detected
DEBUG defer_init:schedule_after_arxan: dearxan::disabler::steamstub: clearing SteamStub protection flags, original values: SteamDrmFlags {
    no_module_verification: true,
    no_encryption: true,
    no_ownership_check: false,
    no_debugger_check: false,
    no_error_dialog: false,
}
DEBUG defer_init:schedule_after_arxan: dearxan::disabler::steamstub: swapping steamstub header OEP with user callback
 INFO filesystem:create_file: me3_mod_host::filesystem: applied filesystem hook
 INFO filesystem:create_directory: me3_mod_host::filesystem: applied filesystem hook
 INFO filesystem:delete_file: me3_mod_host::filesystem: applied filesystem hook
 INFO me3_mod_host: Host successfully attached
 INFO me3_mod_host: Deferred me3 attach
 INFO run:attach: me3_launcher::game: Successfully attached
 INFO run: me3_launcher: attached to game successfully
 INFO dearxan::disabler: arxan detected: true
DEBUG dearxan::disabler: detouring entry point via __security_init_cookie call hook
DEBUG dearxan::disabler: removing __security_init_cookie entry point hook
DEBUG dearxan::disabler: calling __security_init_cookie (will run Arxan initialization routines)
DEBUG dearxan::disabler: flushing callback functions
DEBUG dearxan::disabler: setting game executable page protection flags to RWX
 INFO dearxan::disabler: analyzing Arxan stubs
DEBUG dearxan::analysis: Found 205 potential Arxan stubs
DEBUG dearxan::analysis::stub_info: 141156018 is not in an Arxan stub
DEBUG dearxan::analysis::stub_info: 141bf0945 is not in an Arxan stub
 WARN dearxan::analysis::stub_info: error while decrypting rmx regions: failed to fill whole buffer
 INFO dearxan::disabler: analysis completed in 67.090ms. 203 stubs found
 INFO dearxan::disabler: generating patches
 INFO dearxan::disabler: generated 212 patches in 7.993ms
 INFO dearxan::disabler: applying patches
 INFO dearxan::disabler: all patches applied in 31.100µs. Arxan is now neutered
DEBUG dearxan::disabler: invoking user callback
 INFO defer_init:schedule_after_arxan: me3_mod_host::deferred: result=Ok(Status { is_arxan_detected: true, is_executing_entrypoint: true })
 INFO me3_mod_host: dearxan::disabler::neuter_arxan finished
 INFO hook_system_allocator: me3_mod_host::alloc_hooks: hooking system allocator
 INFO skip_logos: me3_mod_host::skip_logos: applied hook
 INFO hook_heap_allocators: me3_mod_host::alloc_hooks: hooking heap allocators
 INFO oversized_regulation_fix: me3_mod_host::savefile: applied hooks
 INFO assets:file_step:hook:device_manager: me3_mod_host::asset_hooks: applied asset override hook
 INFO assets:file_step:hook:mount_ebl: me3_mod_host::asset_hooks: applied asset override hook
ERROR assets:file_step:hook:mount_ebl:hook: me3_mod_host::asset_hooks: error=Path not found. (os error 3) at path "S:/home/emehvukii/.var/app/com.valvesoftware.Steam/cache/me3\\.tmpBEQaF5" key=-----BEGIN RSA PUBLIC KEY-----
MIIBCwKCAQEA05hqyboW/qZaJ3GBIABFVt1X1aa0/sKINklvpkTRC+5Ytbxvp18L
M1gN6gjTgSJiPUgdlaMbptVa66MzvilEk60aHyVVEhtFWy+HzUZ3xRQm6r/2qsK3
8wXndgEU5JIT2jrBXZcZfYDCkUkjsGVkYqjBNKfp+c5jlnNwbieUihWTSEO+DA8n
aaCCzZD3e7rKhDQyLCkpdsGmuqBvl02Ou7QeehbPPno78mOYs2XkP6NGqbFFGQwa
swyyyXlQ23N15ZaFGRRR0xYjrX4LSe6OJ8Mx/Zkec0o7L28CgwCTmcD2wO8TEATE
AUbbV+1Su9uq2+wQxgnsAp+xzhn9og9hmwIEC35bSQ==
-----END RSA PUBLIC KEY-----

ERROR assets:file_step:hook:mount_ebl:hook: me3_mod_host::asset_hooks: error=Path not found. (os error 3) at path "S:/home/emehvukii/.var/app/com.valvesoftware.Steam/cache/me3\\.tmphot1Xn" key=-----BEGIN RSA PUBLIC KEY-----
MIIBCwKCAQEAvCZAK9UfPdk5JaTlG7n1r0LSVzIan3h0BSLaMXQHOwO7tTGpvtdX
m2ZLY9y8SVmOxWTQqRq14aVGLTKDyH87hPuKd47Y0E5K5erTqBbXW6AD4El1eir2
VJz/pwHt73FVziOlAnao1A5MsAylZ9B5QJyzHJQG+LxzMzmWScyeXlQLOKudfiIG
0qFw/xhRMLNAI+iypkzO5NKblYIySUV5Dx7649XdsZ5UIwJUhxONsKuGS+MbeTFB
mTMehtNj5EwPxGdT4CBPAWdeyPhpoHJHCbgrtnN9akwQmpwdBBxT/sTD16Adn9B+
TxuGDQQALed4S4KvM+fadx27pQz8pP9VLwIEL67iCQ==
-----END RSA PUBLIC KEY-----

ERROR assets:file_step:hook:mount_ebl:hook: me3_mod_host::asset_hooks: error=Path not found. (os error 3) at path "S:/home/emehvukii/.var/app/com.valvesoftware.Steam/cache/me3\\.tmpirPBMF" key=-----BEGIN RSA PUBLIC KEY-----
MIIBCwKCAQEAqLytWD20TSXPeAA1RGDwPW18nJwe2rBX+0HPtdzFmQc/KmQlWrP+
94k6KClK5f7m0xUHwT8+yFGLxPdRvUPyOhBEnRA6tkObVDSxij5y0Jh4h4ilAO73
I8VMcmscS71UKkck4444+eR4vVd+SPlzIu8VgqLefvEn/sX/pAevDp7w+gD0NgvO
e9U6iWEXKwTOPB97X+Y2uB03gSSognmV8h2dtUFJ4Ryn5jrpWmsuUbdvGp0CWBKH
CFruNXnfsG0hlf9LqbVmEzbFl/MhjBmbVjjtelorZsoLPK+OiPTHW5EcwwnPh1vH
FFGM7qRMc0yvHqJnniEWDsSz8Bvg+GxpgQIEC8XNVw==
-----END RSA PUBLIC KEY-----

ERROR assets:file_step:hook:mount_ebl:hook: me3_mod_host::asset_hooks: error=Path not found. (os error 3) at path "S:/home/emehvukii/.var/app/com.valvesoftware.Steam/cache/me3\\.tmpnOMdxl" key=-----BEGIN RSA PUBLIC KEY-----
MIIBCwKCAQEArfUaZWjYAUaZ0q+5znpX55GeyepawCZ5NnsMjIW9CA3vrOgUGRkh
6aAU9frlafQ81LQMRgAznOnQGE7K3ChfySDpq6b47SKm4bWPqd7Ulh2DTxIgi6QP
qm4UUJL2dkLaCnuoya/pGMOOvhT1LD/0CKo/iKwfBcYf/OAnwSnxMRC3SNRugyvF
ylCet9DEdL5L8uBEa4sV4U288ZxZSZLg2tB10xy5SHAsm1VNP4Eqw5iJbqHEDKZW
n2LJP5t5wpEJvV2ACiA4U5fyjQLDzRwtCKzeK7yFkKiZI95JJhU/3DnVvssjIxku
gYZkS9D3k9m+tkNe0VVrd4mBEmqVxg+V9wIEL6Y6tw==
-----END RSA PUBLIC KEY-----

ERROR assets:file_step:hook:mount_ebl:hook: me3_mod_host::asset_hooks: error=Path not found. (os error 3) at path "S:/home/emehvukii/.var/app/com.valvesoftware.Steam/cache/me3\\.tmpL1K9yO" key=-----BEGIN RSA PUBLIC KEY-----
MIIBCwKCAQEAvKTlU3nka4nQesRnYg1NWovCCTLhEBAnjmXwI69lFYfc4lvZsTrQ
E0Y25PtoP0ZddA3nzflJNz1rBwAkqfBRGTeeTCAyoNp/iel3EAkid/pKOt3JEkHx
rojRuWYSQ0EQawcBbzCfdLEjizmREepRKHIUSDWgu0HTmwSFHHeCFbpBA1h99L2X
izH5XFTOu0UIcUmBLsK6DYsIj5QGrWaxwwXcTJN/X+/syJ/TbQK9W/TCGaGiirGM
1u2wvZXSZ7uVM3CHwgNhAMiqLvqORygcDeNqxgq+dXDTxka43j7iPJWdHs8b25fy
aH3kbUxKlDGaEENNNyZQcQrgz8Q76jIE0QIEFUsz9w==
-----END RSA PUBLIC KEY-----

 INFO assets:file_step:hook:ebl: me3_mod_host::asset_hooks: applied asset override hook