# \#Cooking **URL:** https://forums.unrealengine.com/tag/cooking/1157.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [Internal Error - Cooker Timeout errors.com.epicgames.cookplugin.heartbeattimeout 42.20](https://forums.unrealengine.com/t/internal-error-cooker-timeout-errors-com-epicgames-cookplugin-heartbeattimeout-42-20/2832972)
**Author:** [@pate0321](https://forums.unrealengine.com/u/pate0321)\ **Replies:** 1\ **Last updated:** [September 25, 2026, 5:58pm UTC](https://forums.unrealengine.com/t/internal-error-cooker-timeout-errors-com-epicgames-cookplugin-heartbeattimeout-42-20/2832972 "2026-09-25T17:58:13Z")
Summary My UEFN project passes Verse compilation, Windows cooking, memory calculation, and UEFN Publishing Validation. However, Creator Portal blocks release creation with: Internal Error – Cooker Timeout. errors.com.epi… --- ## [Single asset cooking](https://forums.unrealengine.com/t/single-asset-cooking/459122)
**Author:** [@MrMcKvarz](https://forums.unrealengine.com/u/MrMcKvarz)\ **Replies:** 1\ **Last updated:** [July 2, 2026, 1:30pm UTC](https://forums.unrealengine.com/t/single-asset-cooking/459122 "2026-07-02T13:30:50Z")
I know that unreal doesn’t support this feature right now but it would be great if you can point me to a place to start. I only need this to work for uobject/aactor derived blueprints. --- ## [How can i cook a single uasset](https://forums.unrealengine.com/t/how-can-i-cook-a-single-uasset/375835)
**Author:** [@Vault\_Boss](https://forums.unrealengine.com/u/Vault_Boss)\ **Replies:** 4\ **Last updated:** [July 2, 2026, 10:01am UTC](https://forums.unrealengine.com/t/how-can-i-cook-a-single-uasset/375835 "2026-07-02T10:01:13Z")
i’m already pak a uasset success. but it can’t be used in my pakage Gmae. i have been debug the game and check the output log. the log tell me : the asset must be cook before the game use it. then i try to cook a uasse… --- ## [Can I cook a specific asset?](https://forums.unrealengine.com/t/can-i-cook-a-specific-asset/367496)
**Author:** [@wingedrobin](https://forums.unrealengine.com/u/wingedrobin)\ **Replies:** 7\ **Last updated:** [July 2, 2026, 8:51am UTC](https://forums.unrealengine.com/t/can-i-cook-a-specific-asset/367496 "2026-07-02T08:51:56Z")
Hi, Is there any way to cook a specific asset with command line or other else? For example, If I modify some content in a data table, can I use any console command to cook this uasset of data table? Just like we can use… --- ## [Cook failure EXCEPTION\_ACCESS\_VIOLATION with no asset name in the log ](https://forums.unrealengine.com/t/cook-failure-exception-access-violation-with-no-asset-name-in-the-log/2716033)
**Author:** [@whiteroseofthesea](https://forums.unrealengine.com/u/whiteroseofthesea)\ **Replies:** 0\ **Last updated:** [April 17, 2026, 1:59am UTC](https://forums.unrealengine.com/t/cook-failure-exception-access-violation-with-no-asset-name-in-the-log/2716033 "2026-04-17T01:59:06Z")
I was packaging my UE 5.5 project and kept getting this at the end of the cook: Unhandled Exception: EXCEPTION\_ACCESS\_VIOLATION writing address 0x0000000000000030 \[Callstack\] UnrealEditor-UMG.dll!UnknownFunction \[Callst… --- ## [Failed to save zen oplog container](https://forums.unrealengine.com/t/failed-to-save-zen-oplog-container/2710319)
**Author:** [@e3delyptos](https://forums.unrealengine.com/u/e3delyptos)\ **Replies:** 0\ **Last updated:** [March 31, 2026, 9:48am UTC](https://forums.unrealengine.com/t/failed-to-save-zen-oplog-container/2710319 "2026-03-31T09:48:14Z")
Hi everyone, We are currently experimenting with cooked data snapshots using a shared Zen server instance. The shared Zen server contains an already uploaded project and oplog. It was uploaded with the command: zen.exe… --- ## [Crash on launch on Android after upgrading from UE 5.6 to UE 5.7](https://forums.unrealengine.com/t/crash-on-launch-on-android-after-upgrading-from-ue-5-6-to-ue-5-7/2699536)
**Author:** [@RoroKris](https://forums.unrealengine.com/u/RoroKris)\ **Replies:** 4\ **Last updated:** [March 18, 2026, 11:24am UTC](https://forums.unrealengine.com/t/crash-on-launch-on-android-after-upgrading-from-ue-5-6-to-ue-5-7/2699536 "2026-03-18T11:24:39Z")
Hello! We recently started looking into finally upgrading our mobile project from 5.6 to 5.7. When trying to launch a build packaged with 5.7.3 (and 5.7.2) on any of our Android testing devices our game immediately cra… --- ## [Cook Error : Filename too long](https://forums.unrealengine.com/t/cook-error-filename-too-long/384668)
**Author:** [@primacy](https://forums.unrealengine.com/u/primacy)\ **Replies:** 9\ **Last updated:** [February 24, 2026, 5:54am UTC](https://forums.unrealengine.com/t/cook-error-filename-too-long/384668 "2026-02-24T05:54:19Z")
Hey so I am trying to package my game and I am getting cooking errors because the filename is too long. However, this is not my file so there is no way for me to change the filename without messing up other internal thin… --- ## [Cook EditorOnly Asset？](https://forums.unrealengine.com/t/cook-editoronly-asset/2697781)
**Author:** [@XiaLi](https://forums.unrealengine.com/u/XiaLi)\ **Replies:** 0\ **Last updated:** [February 6, 2026, 10:36am UTC](https://forums.unrealengine.com/t/cook-editoronly-asset/2697781 "2026-02-06T10:36:07Z")
Hello! I have a problem with the cook process. I have a UStruct property in uclass and wrapped in WITH\_EDITORONLY\_DATA. And now it will not collect by cooker when SkipOnlyEditorOnly=true. But now I want to this UStruct… --- ## [Using CookIncremental to cook against a pulled down zen cook snapshot](https://forums.unrealengine.com/t/using-cookincremental-to-cook-against-a-pulled-down-zen-cook-snapshot/2693951)
**Author:** [@SethBehunin](https://forums.unrealengine.com/u/SethBehunin)\ **Replies:** 3\ **Last updated:** [February 3, 2026, 10:36pm UTC](https://forums.unrealengine.com/t/using-cookincremental-to-cook-against-a-pulled-down-zen-cook-snapshot/2693951 "2026-02-03T22:36:20Z")
We are looking to move from iterative cooking over to incremental cooking. We are currently on UE 5.7.1. Our shared server where we export snapshots to is v5.7.6 and our local workstation zenservers are also 5.7.6. Th… --- ## [Cook Error (ensure condition)](https://forums.unrealengine.com/t/cook-error-ensure-condition/462642)
**Author:** [@Freeman1852](https://forums.unrealengine.com/u/Freeman1852)\ **Replies:** 3\ **Last updated:** [February 1, 2026, 7:07pm UTC](https://forums.unrealengine.com/t/cook-error-ensure-condition/462642 "2026-02-01T19:07:34Z")
So, i tried to build game, but got error on cooking. And i have no idea what file can cause this. Anybody had this kind of error? Ensure condition failed: TypeData.Info.AssetBaseClassLoaded == BaseClass && TypeData.Inf… --- ## [UE5.7.1 ProjectLauncher Packaging Error when build .pak file](https://forums.unrealengine.com/t/ue5-7-1-projectlauncher-packaging-error-when-build-pak-file/2693661)
**Author:** [@DaVinci\_13](https://forums.unrealengine.com/u/DaVinci_13)\ **Replies:** 5\ **Last updated:** [January 28, 2026, 2:36am UTC](https://forums.unrealengine.com/t/ue5-7-1-projectlauncher-packaging-error-when-build-pak-file/2693661 "2026-01-28T02:36:23Z")
Hi, I’m trying to build .pak file by UE5.7.1 Project Launcher. But I get some error when packaging. Both mac and windows. There is my package config. And there is the error log: \*\*\*\*\*\*\*\*\*\* COOK COMMAND COMPL… --- ## [UE5.7+, use project-launcher do cooking, it alway set "-zenstore" enabled.](https://forums.unrealengine.com/t/ue5-7-use-project-launcher-do-cooking-it-alway-set-zenstore-enabled/2695301)
**Author:** [@DaVinci\_13](https://forums.unrealengine.com/u/DaVinci_13)\ **Replies:** 0\ **Last updated:** [January 27, 2026, 5:24pm UTC](https://forums.unrealengine.com/t/ue5-7-use-project-launcher-do-cooking-it-alway-set-zenstore-enabled/2695301 "2026-01-27T17:24:57Z")
Hi, everyone! In UE5.7+’s source code, https://github.com/EpicGames/UnrealEngine/blob/release/Engine/Source/Programs/AutomationTool/Gauntlet/Unreal/Automation/UE.IncrementalCookByTheBook.cs#L19, it caused that when usi… --- ## [Unreal 5.7.1 Cooking Stuck (Windows 64-bit)](https://forums.unrealengine.com/t/unreal-5-7-1-cooking-stuck-windows-64-bit/2693383)
**Author:** [@vexe](https://forums.unrealengine.com/u/vexe)\ **Replies:** 2\ **Last updated:** [January 19, 2026, 8:16pm UTC](https://forums.unrealengine.com/t/unreal-5-7-1-cooking-stuck-windows-64-bit/2693383 "2026-01-19T20:16:11Z")
We upgrade from 5.6 to 5.7.1 because some landscape tools we’re using were fixed in 5.7.1. For some reason now we can’t cook our project (Windows 64-bit). I’ve tried deleting Saved/Intermediate/Binary/DerivedDataCached … --- ## [Zen Cooked Data Snapshot descriptor storage](https://forums.unrealengine.com/t/zen-cooked-data-snapshot-descriptor-storage/2676463)
**Author:** [@Jacobo-rpg](https://forums.unrealengine.com/u/Jacobo-rpg)\ **Replies:** 0\ **Last updated:** [November 19, 2025, 11:39am UTC](https://forums.unrealengine.com/t/zen-cooked-data-snapshot-descriptor-storage/2676463 "2025-11-19T11:39:04Z")
I am trying to set up the Cooked Data Snapshots for Zenserver and the documentation ( Cooked Data Snapshots with Zen Storage Server for Unreal Engine | Unreal Engine 5.7 Documentation | Epic Developer Community ) describ… --- ## [Cant cook in 5.6](https://forums.unrealengine.com/t/cant-cook-in-5-6/2626383)
**Author:** [@Gisterson](https://forums.unrealengine.com/u/Gisterson)\ **Replies:** 9\ **Last updated:** [November 5, 2025, 12:44pm UTC](https://forums.unrealengine.com/t/cant-cook-in-5-6/2626383 "2025-11-05T12:44:56Z")
Hello community! I used to handle it myself, but after switching to version 5.6 (I tried release, dev-5.6, ue5-main, and 5.6 from GitHub, but they all failed to cookmy project), I’ve been struggling. I’ve validated all t… --- ## [Spline mesh collision missing from packaged build](https://forums.unrealengine.com/t/spline-mesh-collision-missing-from-packaged-build/307456)
**Author:** [@RyanGadz](https://forums.unrealengine.com/u/RyanGadz)\ **Replies:** 11\ **Last updated:** [August 29, 2025, 4:09am UTC](https://forums.unrealengine.com/t/spline-mesh-collision-missing-from-packaged-build/307456 "2025-08-29T04:09:46Z")
I have been working on a procedurally generated infinite runner style game with a series of spline mesh tubes as the level. If the tunnel spline and spline mesh are generated at runtime the collision data will be missing… --- ## [Platform Cook error when preparing platform data when Publishing Project](https://forums.unrealengine.com/t/platform-cook-error-when-preparing-platform-data-when-publishing-project/2618298)
**Author:** [@PAKPrime](https://forums.unrealengine.com/u/PAKPrime)\ **Replies:** 1\ **Last updated:** [August 2, 2025, 2:20pm UTC](https://forums.unrealengine.com/t/platform-cook-error-when-preparing-platform-data-when-publishing-project/2618298 "2025-08-02T14:20:47Z")
Summary I am about to publish my project when i receive Switch: Failed to prepare data for PROJECTNAME ValkyriePreparedPlatformData: Error: Switch: Failed to prepare data for PROJECTNAME. I edit afterwards by removing… --- ## [Roadmap for improvements for Multi-process cook task load balancing? ](https://forums.unrealengine.com/t/roadmap-for-improvements-for-multi-process-cook-task-load-balancing/2623802)
**Author:** [@achew-tnm1](https://forums.unrealengine.com/u/achew-tnm1)\ **Replies:** 0\ **Last updated:** [July 30, 2025, 1:07pm UTC](https://forums.unrealengine.com/t/roadmap-for-improvements-for-multi-process-cook-task-load-balancing/2623802 "2025-07-30T13:07:56Z")
Hi, I was wondering if there are any plans to improve the way multiprocess cook works in the near future? Two specific parts are how package cooking tasks are load-balanced between workers? Specifically, it looks li… --- ## [Random Cook error appeared ](https://forums.unrealengine.com/t/random-cook-error-appeared/2387601)
**Author:** [@DW.Im\_Good.Trust](https://forums.unrealengine.com/u/DW.Im_Good.Trust)\ **Replies:** 3\ **Last updated:** [July 18, 2025, 4:05am UTC](https://forums.unrealengine.com/t/random-cook-error-appeared/2387601 "2025-07-18T04:05:11Z")
Summary One day I was working on my project as normal, the next day before making any changes I tried to start a session and got a cooking error. Anytime I have tried loading a session since I have gotten the same error.… --- ## [multi process cook](https://forums.unrealengine.com/t/multi-process-cook/2566175)
**Author:** [@god4299](https://forums.unrealengine.com/u/god4299)\ **Replies:** 0\ **Last updated:** [June 19, 2025, 1:33pm UTC](https://forums.unrealengine.com/t/multi-process-cook/2566175 "2025-06-19T13:33:25Z")
I would like to consult the multi-process Cook CPU performance issues, in the use of the default single-process mode COOK, CPU performance is basically 100% , but the use of multi-process such as 3 process, well, after t… --- ## [Error: Could not save memory cache - ExitCode=25](https://forums.unrealengine.com/t/error-could-not-save-memory-cache-exitcode-25/469121)
**Author:** [@anonymous\_user\_51440897](https://forums.unrealengine.com/u/anonymous_user_51440897)\ **Replies:** 1\ **Last updated:** [May 27, 2025, 7:07pm UTC](https://forums.unrealengine.com/t/error-could-not-save-memory-cache-exitcode-25/469121 "2025-05-27T19:07:56Z")
I’m having issues cooking my project after upgrading to 4.25.3 from 4.23. I also integrated wwise before attempting to cook/build which may not have been the best idea. I’m getting a fair amount of reference errors as w… --- ## [Crash when using multi-core cooking](https://forums.unrealengine.com/t/crash-when-using-multi-core-cooking/2495726)
**Author:** [@RyanD-UW](https://forums.unrealengine.com/u/RyanD-UW)\ **Replies:** 0\ **Last updated:** [May 7, 2025, 5:25pm UTC](https://forums.unrealengine.com/t/crash-when-using-multi-core-cooking/2495726 "2025-05-07T17:25:29Z")
We’ve recently been trying out multi-core cooking but we’re hitting a crash intermittently. We’re running with 4 cores on a machine that has plenty more cores and plenty of RAM. We had to limit the number of cores becaus… --- ## [Got incorrect results when following the Preparing Assets for Chunking guide](https://forums.unrealengine.com/t/got-incorrect-results-when-following-the-preparing-assets-for-chunking-guide/2490538)
**Author:** [@mightyenigma](https://forums.unrealengine.com/u/mightyenigma)\ **Replies:** 6\ **Last updated:** [May 7, 2025, 3:25am UTC](https://forums.unrealengine.com/t/got-incorrect-results-when-following-the-preparing-assets-for-chunking-guide/2490538 "2025-05-07T03:25:40Z")
I tried to follow the guide on Preparing Assets for Chunking here: https://dev.epicgames.com/documentation/en-us/unreal-engine/preparing-assets-for-chunking-in-unreal-engine?application\_version=5.3 But as you can see f… --- ## [Is iterative and multi-process cooking fixed? ](https://forums.unrealengine.com/t/is-iterative-and-multi-process-cooking-fixed/2449618)
**Author:** [@alomatkina](https://forums.unrealengine.com/u/alomatkina)\ **Replies:** 1\ **Last updated:** [April 25, 2025, 7:06am UTC](https://forums.unrealengine.com/t/is-iterative-and-multi-process-cooking-fixed/2449618 "2025-04-25T07:06:29Z")
Is the issue with iterative cooks and multi-process cooks fixed for both? In UE 5.5 documentation for multi-process cook I can see that Epic admitted to having a problem with ignoring errors in cook (UE 5.4), and it is … --- ## [How can I cook assets for only certain platforms?](https://forums.unrealengine.com/t/how-can-i-cook-assets-for-only-certain-platforms/2346361)
**Author:** [@RealAero](https://forums.unrealengine.com/u/RealAero)\ **Replies:** 5\ **Last updated:** [February 26, 2025, 1:51pm UTC](https://forums.unrealengine.com/t/how-can-i-cook-assets-for-only-certain-platforms/2346361 "2025-02-26T13:51:59Z")
How can I cook certain assets for only certain platforms? I am making a cross-platform game with VR support and use the MetaXR plugin. I also support platforms that don’t allow MetaXR or are not supported, like Linux, i… --- ## [Incomplete Installation and Missing Files Specific to My Epic Creator Account Preventing Proper Use of Fortnite and UEFN Since October 2023](https://forums.unrealengine.com/t/incomplete-installation-and-missing-files-specific-to-my-epic-creator-account-preventing-proper-use-of-fortnite-and-uefn-since-october-2023/2260100)
**Author:** [@PledgedRanger](https://forums.unrealengine.com/u/PledgedRanger)\ **Replies:** 9\ **Last updated:** [February 6, 2025, 6:49pm UTC](https://forums.unrealengine.com/t/incomplete-installation-and-missing-files-specific-to-my-epic-creator-account-preventing-proper-use-of-fortnite-and-uefn-since-october-2023/2260100 "2025-02-06T18:49:39Z")
Summary Install Epic Games Launcher, Fortnite, and Unreal Editor for Fortnite (UEFN) on a clean, updated Windows installation. Launch UEFN and attempt to load or create a project. Observe persistent errors related to m… --- ## [cant exclude editor content from packaging](https://forums.unrealengine.com/t/cant-exclude-editor-content-from-packaging/2317301)
**Author:** [@NEX\_CREATOR](https://forums.unrealengine.com/u/NEX_CREATOR)\ **Replies:** 0\ **Last updated:** [February 4, 2025, 12:27pm UTC](https://forums.unrealengine.com/t/cant-exclude-editor-content-from-packaging/2317301 "2025-02-04T12:27:35Z")
So i am trying to export/package a game in ue 5.5 and when i normally do it, it’s works. But when i try to export it with “exclude editor content from packaging” checked, it gives me a ton of errors and doesnt package, a… --- ## [Event on "cook/packaging" (Extending editor)](https://forums.unrealengine.com/t/event-on-cook-packaging-extending-editor/469679)
**Author:** [@undercover](https://forums.unrealengine.com/u/undercover)\ **Replies:** 3\ **Last updated:** [January 22, 2025, 2:14pm UTC](https://forums.unrealengine.com/t/event-on-cook-packaging-extending-editor/469679 "2025-01-22T14:14:35Z")
Hi! We have written several custom commands (executed through editor GUI) that we use for automation in UE. The problem we have now is that we want to automatically run those commands when the game is packaged. At the m… --- ## [... but it was never saved as an export](https://forums.unrealengine.com/t/but-it-was-never-saved-as-an-export/445626)
**Author:** [@anonymous\_user\_b3437a7a1](https://forums.unrealengine.com/u/anonymous_user_b3437a7a1)\ **Replies:** 19\ **Last updated:** [December 17, 2024, 11:41pm UTC](https://forums.unrealengine.com/t/but-it-was-never-saved-as-an-export/445626 "2024-12-17T23:41:16Z")
So I’ve recently upgraded from 4.18 to 4.21, and now my cook step consistely says literally every single assent was not saved as an export, for example: LogInit: Display: LogSavePackage: Warning: /Game/Developers//GunTa… [Next page](https://forums.unrealengine.com/tag/cooking/1157.md?match_all_tags=true&page=1&tags%5B%5D=Cooking)