Error | Fortnite Porting | Page 1

brittle lodge Apr 10, 2026, 3:42 PM

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My app dont load and say that:

[ERROR] CUE4Parse.UE4.Exceptions.ParserException: Invalid iochunktoc magic
FByteArchive Info: D:\Fortnite\FortniteGame\Content\Paks\global.uondemandtoc | Pos:8 Length:31355839 (0,0% done)
at CUE4Parse.UE4.IO.Objects.FOnDemandTocHeader..ctor(FArchive Ar)
at CUE4Parse.UE4.IO.IoChunkToc..ctor(FArchive Ar)
at CUE4Parse.UE4.IO.IoChunkToc..ctor(FileInfo file)
at CUE4Parse.UE4.IO.IoChunkToc..ctor(String file)
at FortnitePorting.Models.CUE4Parse.HybridFileProvider.RegisterFiles(DirectoryInfo directory)
at FortnitePorting.Models.CUE4Parse.HybridFileProvider.Initialize()
at FortnitePorting.ViewModels.CUE4ParseViewModel.InitializeProvider()
at FortnitePorting.ViewModels.CUE4ParseViewModel.Initialize()
at FortnitePorting.ViewModels.HomeViewModel.<>c.<<Initialize>b__5_1>d.MoveNext()
--- End of stack trace from previous location ---
at FortnitePorting.Shared.Services.TaskService.<>c__DisplayClass4_0.<<Run>b__0>d.MoveNext()

errant terrace Apr 10, 2026, 4:27 PM

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Update to the newest version of Fortnite Porting from #download (or from #legacy-v3-download if you're still using v3)

brittle lodge Apr 17, 2026, 2:54 PM

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errant terrace Update to the newest version of Fortnite Porting from <#1469028068579479702> (or...

😭 Even when trying both options, the same error occurs.

errant terrace Apr 17, 2026, 2:55 PM

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brittle lodge 😭 Even when trying both options, the same error occurs.

The same "invalid iochunktoc magic" error, or are you getting a different error on the new versions?

brittle lodge Apr 17, 2026, 2:55 PM

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errant terrace The same "invalid iochunktoc magic" error, or are you getting a different error ...

ill send one sec

brittle lodge Apr 17, 2026, 2:56 PM

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errant terrace The same "invalid iochunktoc magic" error, or are you getting a different error ...

2026-04-17 1134.810 -03:00 [INF] Fortnite Porting v3.1.9
2026-04-17 1134.826 -03:00 [INF] .NET Version: .NET 8.0.24
2026-04-17 1136.931 -03:00 [INF] Found Fortnite Installation at D:\Fortnite\FortniteGame\Content\Paks
2026-04-17 1137.410 -03:00 [INF] ["Get"] OK (200): https://fortniteporting.halfheart.dev/api/v3/online
2026-04-17 1137.573 -03:00 [INF] ["Get"] OK (200): https://fortniteporting.halfheart.dev/api/v3/repository
2026-04-17 1137.987 -03:00 [INF] Discord Rich Presence Started for leandrocrynow (852890769513644082)
2026-04-17 1143.598 -03:00 [INF] ["Get"] OK (200): https://fortniteporting.halfheart.dev/api/v3/news
2026-04-17 1143.760 -03:00 [INF] ["Get"] OK (200): https://fortniteporting.halfheart.dev/api/v3/featured
2026-04-17 1144.231 -03:00 [INF] ["Get"] OK (200): https://api.fortniteporting.app/v1/aes
2026-04-17 1144.241 -03:00 [WRN] Pak file "pakchunk0-WindowsClient.pak" has unsupported version 12
2026-04-17 1144.802 -03:00 [INF] ["Get"] Unauthorized (401): https://account-public-service-prod.ol.epicgames.com/account/api/oauth/verify
2026-04-17 1144.802 -03:00 [ERR] System.Net.Http.HttpRequestException: Request failed with status code Unauthorized
2026-04-17 1145.305 -03:00 [INF] ["Post"] OK (200): https://account-public-service-prod03.ol.epicgames.com/account/api/oauth/token
2026-04-17 1145.365 -03:00 [ERR] CUE4Parse.UE4.Exceptions.ParserException: Invalid iochunktoc magic
FByteArchive Info: D:\Fortnite\FortniteGame\Content\Paks\global.uondemandtoc | Pos:8 Length:39740647 (0,0% done)
at CUE4Parse.UE4.IO.Objects.FOnDemandTocHeader..ctor(FArchive Ar)
at CUE4Parse.UE4.IO.IoChunkToc..ctor(FArchive Ar)
at CUE4Parse.UE4.IO.IoChunkToc..ctor(FileInfo file)
at CUE4Parse.UE4.IO.IoChunkToc..ctor(String file)
at FortnitePorting.Models.CUE4Parse.HybridFileProvider.RegisterFiles(DirectoryInfo directory)
at FortnitePorting.Models.CUE4Parse.HybridFileProvider.Initialize()
at FortnitePorting.ViewModels.CUE4ParseViewModel.InitializeProvider()
at FortnitePorting.ViewModels.CUE4ParseViewModel.Initialize()
at FortnitePorting.ViewModels.HomeViewModel.<>c.<<Initialize>b__5_1>d.MoveNext()
--- End of stack trace from previous location ---
at FortnitePorting.Shared.Services.TaskService.<>c__DisplayClass4_0.<<Run>b__0>d.MoveNext()

errant terrace Apr 17, 2026, 2:57 PM

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That log says v3.1.9 at the top, are you using v3.1.9.4 or just v3.1.9?

brittle lodge Apr 17, 2026, 2:58 PM

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errant terrace That log says v3.1.9 at the top, are you using v3.1.9.4 or just v3.1.9?

It appeared when I opened it to do the update; I clicked to do the update. Was it supposed to open after I closed the window?

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that one

errant terrace Apr 17, 2026, 3:01 PM

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Ah, yeah the in-app updater in v3 didn't work very well, so it's probably not updating the app correctly. I would recommend downloading the version I forwarded above, and then if it prompts you to update again when you open that new version just say no

brittle lodge Apr 17, 2026, 3:02 PM

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errant terrace Ah, yeah the in-app updater in v3 didn't work very well, so it's probably not up...

okk, let me check

brittle lodge Apr 17, 2026, 3:03 PM

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errant terrace Ah, yeah the in-app updater in v3 didn't work very well, so it's probably not up...

GOT IT! tysm ^^

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have a nice day/night

errant terrace Apr 17, 2026, 3:04 PM

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