Another PackagingResults: Error: Unknown Cook Failure

Development Platform & Builds
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Hello, this is my first time packaging the game, and as expected, it got some errors. I’ve been searching up the forum for similar case, but the problem is I’m very new and don’t really know how to read the log properly. So can anyone please take a look and let me know what’s going on with these errors on my case? Much appreciated!

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UATHelper: Packaging (Windows): LogShaderCompilers: Display: TBasePassPSFCachedPointIndirectLightingPolicy - 5.24% of total time (compiled 1113 times, average 2.30 sec, max 31.43 sec, min 0.68 sec) UATHelper: Packaging (Windows): LogShaderCompilers: Display: ================================================ UATHelper: Packaging (Windows): LogMounteaDialogueSystemEditor: Warning: MounteaDialogueSystemEditor module has been unloaded UATHelper: Packaging (Windows): Took 3174.8912373000003s to run UnrealEditor-Cmd.exe, ExitCode=1 UATHelper: Packaging (Windows): ERROR: Cook failed. UATHelper: Packaging (Windows): (see C:\Users\Administrator\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_5.2\Log.txt for full exception trace) UATHelper: Packaging (Windows): AutomationTool executed for 0h 53m 0s UATHelper: Packaging (Windows): AutomationTool exiting with ExitCode=25 (Error_UnknownCookFailure) UATHelper: Packaging (Windows): BUILD FAILED PackagingResults: Error: Unknown Cook Failure

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Hello there @PTCreation!

Checking your log extract, we can see that the cook run for quite some time, and seems to have failed in a late stage. One key line to check out is the following:

MounteaDialogueSystemEditor module has been unloaded

This suggest a possible conflict with a plugin in the engine. So, for the first step, go to Edit > Plugins, and look for any recently added plugins, specially if it’s related to “MounteaDialogueSystem”, and disable them. After that, please test packaging again.

As for general steps to take, it’s always good to clear your project’s cache, via opening the main directory, and deleting folders Saved, Intermediate, and DerivedDataCache. After that, re-open your project and allow it to re-build. As well, you can select all your content in the browser, right-click, and select “Fix Up Redirectors”.

If the issue persists after these changes, then we will need to see the full log. Simply locate it the crash logs folder, and share its full contents here. Hope this helps, and good luck!