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[Bug]: Error during a fresh installation of ZenlessZoneZero #907

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[Bug]: Error during a fresh installation of ZenlessZoneZero#907
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Area: LauncherIssue labeled for Launcher update mechanismBugSomething isn't workingGame: Zenless Zone ZeroIssue labeled for Zenless Zone ZeroPriority: Medium

Description

@People-11
People-11
opened on Sep 8, 2026

Affected Version

1.84.6 Preview

Bug Behavior

When I disabled Sophon mode (as it is extremely slow in my region) and selected an empty directory for a fresh installation, the following error appeared after all the compressed files had been downloaded, preventing the installation from completing:

System.IndexOutOfRangeException: Cannot find an offset of the Central Directory
   at Hi3Helper.SimpleZipArchiveReader.ZipArchiveReader.FindCentralDirectoryOffsetAndSize(ReadOnlySpan`1) + 0xc2
   at Hi3Helper.SimpleZipArchiveReader.ZipArchiveReader.CreateFrom(Stream) + 0xff
   at CollapseLauncher.Interfaces.ProgressBase.GetArchiveUncompressedSizeManaged(Stream) + 0xe
   at CollapseLauncher.Interfaces.ProgressBase.GetSingleOrSegmentedUncompressedSize(GameInstallPackage asset) + 0x228
   at System.Linq.Enumerable.Sum[TSource,TResult,TAccumulator](IEnumerable`1, Func`2) + 0x56
   at CollapseLauncher.InstallManager.Base.InstallManagerBase.<StartPackageInstallationInner>d__72.MoveNext() + 0xe4
--- End of stack trace from previous location ---
   at CollapseLauncher.InstallManager.Zenless.ZenlessInstall.<StartPackageInstallationInner>d__15.MoveNext() + 0x164
--- End of stack trace from previous location ---
   at CollapseLauncher.InstallManager.Base.InstallManagerBase.<StartPackageInstallation>d__71.MoveNext() + 0x50
--- End of stack trace from previous location ---
   at CollapseLauncher.Pages.HomePage.<InstallGameDialog>d__59.MoveNext() + 0x5f8

Expected Behavior

In theory, it should extract all the files and generate a usable Config.ini file.

Steps to reproduce

  1. Disable Sophon download mode
  2. Choose a blank folder to install game
  3. Download all archives
  4. After verified all the archives, the error popups.

Related Issues

No response

Screenshot(s)

Image

Additional Information

log-2026-09-08-pre1.84.6-id1-18-53-59.log

Activity

  1. People-11
    added
    Needs TriagingThis issue needs the developer's attention to sort & prioritize.
    on Sep 8, 2026

  2. bagusnl commented on Sep 8, 2026

    @bagusnl
    bagusnl
    on Sep 8, 2026
    Member

    This should be to be expected as ZZZ stopped serving zip download as of 3.1.0 update. 3.2.0 update is not available in the old zip API so the update fails. This should've been fallback to Sophon as it is other games but alas that mechanism should get fixed.

    As of your slowness in Sophon install, can you check how many threads you have in the download ? You could lower or bump the numbers to fit how your internet behaves. Some ISPs like more connection but other don't. Try to fiddle with it and see if it would help!

    Image
  3. bagusnl
    added
    BugSomething isn't working
    Game: Zenless Zone ZeroIssue labeled for Zenless Zone Zero
    Area: LauncherIssue labeled for Launcher update mechanism
    Priority: Medium
    and removed
    Needs TriagingThis issue needs the developer's attention to sort & prioritize.
    on Sep 8, 2026

  4. bagusnl commented on Sep 8, 2026

    @bagusnl
    bagusnl
    on Sep 8, 2026
    Member

    my bad, i did not scroll down long enough to see that the zip is available LMAO
    something something download manually the zip and put the file next to zenlesszonezero.exe and collapse should pick the file up given you also disabled sophon in settings

  5. People-11 commented on Sep 9, 2026

    @People-11
    People-11
    on Sep 9, 2026
    Author

    collapse should pick the file up

    It won't, as no valid config.ini is generated. Collapse will only download the archives again even I can already launch the game and complete the in-game file check.

  6. People-11 commented on Sep 9, 2026

    @People-11
    People-11
    on Sep 9, 2026
    Author

    As of your slowness in Sophon install, can you check how many threads you have in the download

    It won't help because my region has a very poor connection to CNREL's CDN. Using Sophon mode will waste lots of time on connecting rather than tranferring.

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    Area: LauncherIssue labeled for Launcher update mechanismBugSomething isn't workingGame: Zenless Zone ZeroIssue labeled for Zenless Zone ZeroPriority: Medium

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