Internal Error - Cooker Timeout errors.com.epicgames.cookplugin.heartbeattimeout 42.20

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.epicgames.cookplugin.heartbeattimeout. This problem has been consistently occurring since version 42.20. I have tried virtually all possible troubleshooting methods: I deleted complex models, changed materials to simpler ones, changed everything I could think of, and the error still persists. Furthermore, as a test, I took a completely different project and created it as a new project from scratch – and the exact same problem appeared, with the only difference being that Verse verification gets stuck spinning infinitely.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Creator Portal

Steps to Reproduce

Open the project in UEFN 42.20.
Compile Verse successfully.
Launch a session and run memory calculation.
Create a new private version. UEFN reports “Publishing Validation: Passed, Ready to Publish,” with successful Windows cooking.
Open that same private version in Creator Portal and select Create Release.
Creator Portal fails with Internal Error – Cooker Timeout. errors.com.epicgames.cookplugin.heartbeattimeout (or in newly created test projects, Verse verification gets stuck in an infinite loop spinning).

Expected Result

The Creator Portal should successfully create a release without throwing a cookplugin.heartbeattimeout error, and Verse verification in projects should complete normally and in a timely manner instead of spinning infinitely.

Observed Result

Despite local UEFN validation passing successfully, the Creator Portal fails to create a release and throws an internal error: errors.com.epicgames.cookplugin.heartbeattimeout. Additionally, when testing with brand-new projects created from scratch, Verse verification gets stuck in an infinite spinning loop and never finishes.

Platform(s)

PC

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1 Like

Same here, I cant publish anything cuz of this bug.