# Plugin packaging fails, although game and editor builds fine

**URL:** <https://forums.unrealengine.com/t/plugin-packaging-fails-although-game-and-editor-builds-fine/2725244>\
**Category:** Pipeline & Plugins\
**Tags:** Packaging-Error, unreal-engine, packaging-projects\
**Created:** [May 30, 2026, 1:00am UTC](https://forums.unrealengine.com/t/plugin-packaging-fails-although-game-and-editor-builds-fine/2725244 "2026-05-30T01:00:42Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![sarah\_j\_smith](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/sarah_j_smith/32/1024970_2.png) [@sarah\_j\_smith](https://forums.unrealengine.com/u/sarah_j_smith)\
**Post date:** [May 30, 2026, 1:00am UTC](https://forums.unrealengine.com/t/plugin-packaging-fails-although-game-and-editor-builds-fine/2725244/1 "2026-05-30T01:00:42Z")

</div>

Environment: Unreal Engine v5.6 / C++ / 2D project / Mac / Rider

- [Project Github](https://github.com/sarah-j-smith/AdventureGameTemplate/)

Small section of compiler output showing errors. All this code builds and runs in the editor.

Full log attached.

[UBA-UnrealGame-Mac-Development.txt](https://forums.unrealengine.com/uploads/short-url/nDgd6RBEdys84azGAc0fHn2mkiX.txt) (810.3 KB)

Things I have tried:

- Turning off all supported platforms so only Mac is supported.
- Looking for real compile errors or missing module entries

Again all of this works fine, but fails when I package. I package by clicking the button in the editors plugin dialog. That got annoying so I wrote this bash script which does the same thing:

[package-plugin.sh](https://forums.unrealengine.com/uploads/short-url/yPhxiWBVyHHo1Jbv6NxNk6DnwbR.sh) (2.6 KB)

Both produce the same errors. Its like the build script suddenly cannot load the engine module.

Any thoughts greatly appreciated.

```auto
UATHelper: Package Plugin Task (Mac): /Users/sez/Downloads/AdventureTools/HostProject/Plugins/AdventureTools/Source/Dialog/Public/DialogComponent.h:158:5: error: unknown type name 'FTimerDelegate'; did you mean 'FTickerDelegate'?
UATHelper: Package Plugin Task (Mac): 158 | FTimerDelegate BarkTimerDelegate;
UATHelper: Package Plugin Task (Mac): | ^ ~~~~~~~~~~~~~
UATHelper: Package Plugin Task (Mac): | FTickerDelegate
UATHelper: Package Plugin Task (Mac): /Users/Shared/Epic Games/UE_5.6/Engine/Source/Runtime/Core/Public/Containers/Ticker.h:21:40: note: 'FTickerDelegate' declared here
UATHelper: Package Plugin Task (Mac): 21 | DECLARE_DELEGATE_RetVal_OneParam(bool, FTickerDelegate, float);
UATHelper: Package Plugin Task (Mac): | ^
UATHelper: Package Plugin Task (Mac): In file included from /Users/sez/Downloads/AdventureTools/HostProject/Plugins/AdventureTools/Intermediate/Build/Mac/arm64+x64/UnrealGame/Development/Dialog/Module.Dialog.cpp:10:
UATHelper: Package Plugin Task (Mac): /Users/sez/Downloads/AdventureTools/HostProject/Plugins/AdventureTools/Intermediate/Build/Mac/UnrealGame/Inc/Dialog/UHT/PromptData.gen.cpp:22:73: error: unknown type name 'FTableRowBase'; did you mean 'FTableRowStyle'?
UATHelper: Package Plugin Task (Mac): 22 | static_assert(std::is_polymorphic<FPromptData>() == std::is_polymorphic<FTableRowBase>(), "USTRUCT FPromptData cannot be polymorphic unless super FTableRowBase is polymorphic");
UATHelper: Package Plugin Task (Mac): | ^ ~~~~~~~~~~~~
UATHelper: Package Plugin Task (Mac): | FTableRowStyle
UATHelper: Package Plugin Task (Mac): /Users/Shared/Epic Games/UE_5.6/Engine/Source/Runtime/SlateCore/Public/Styling/SlateTypes.h:1640:8: note: 'FTableRowStyle' declared here
UATHelper: Package Plugin Task (Mac): 1640 | struct FTableRowStyle : public FSlateWidgetStyle
UATHelper: Package Plugin Task (Mac): | ^
UATHelper: Package Plugin Task (Mac): 13 errors generated.

```

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<div class="post-metadata">

**Author:** ![thor\_hzf](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@thor\_hzf](https://forums.unrealengine.com/u/thor_hzf)\
**Post date:** [May 30, 2026, 1:40pm UTC](https://forums.unrealengine.com/t/plugin-packaging-fails-although-game-and-editor-builds-fine/2725244/3 "2026-05-30T13:40:25Z")

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hi , i was able to package this project successfully

i’m on ue-5.9

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<div class="post-metadata">

**Author:** ![sarah\_j\_smith](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/sarah_j_smith/32/1024970_2.png) [@sarah\_j\_smith](https://forums.unrealengine.com/u/sarah_j_smith)\
**Post date:** [May 31, 2026, 11:02am UTC](https://forums.unrealengine.com/t/plugin-packaging-fails-although-game-and-editor-builds-fine/2725244/4 "2026-05-31T11:02:20Z")

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Amazing! Thanks for this. Will try when back from a travel.

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<div class="post-metadata">

**Author:** ![sarah\_j\_smith](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/sarah_j_smith/32/1024970_2.png) [@sarah\_j\_smith](https://forums.unrealengine.com/u/sarah_j_smith)\
**Post date:** [June 3, 2026, 12:07pm UTC](https://forums.unrealengine.com/t/plugin-packaging-fails-although-game-and-editor-builds-fine/2725244/5 "2026-06-03T12:07:33Z")

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Thanks for taking a look at the project!

But looking at the video, this is not the **_plugin_**.

 ![Screenshot 2026-06-03 at 10.03.17 pm](https://d3kjluh73b9h9o.cloudfront.net/original/4X/d/8/3/d83484a5064f8ee35751fc6712cb27b879e8e235.jpeg)

As per the title of the post, I’m hoping to find why the plugin I’m trying to create here doesn’t package.

The log file reflects those problems with packaging of the plugin.

Thanks again.