v42 - Verse Validation Failed during Publish, no error message

Summary

While publishing a private build that successfully completed Memory Test, the Verse Validation step fails and prevents me from publishing a new build of our game.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Publishing

Steps to Reproduce

  1. Publish Private Island 5937-3333-7569
  2. Wait for Verse Validation
  3. Failure

Expected Result

Success

Observed Result

While waiting for the Verse Validation step, the browser all of a sudden updates with a message that says “Something went wrong” in red text along the top. Going back to create.fortnite.com and navigating back to publishing the island, the Verse Validation fails immediately this time. When clicking the error message, the message “Internal Cooker Error errors.com.epicgames.cookplugin.cookfailure” appears, with no further information.

Platform(s)

Windows

Island Code

9621-3035-2804

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Additional Notes

In the v42 patch, our game was broken with a critical engine bug that results in the game + UEFN engine crashing immediately upon load. I’ve spent the day diagnosing and identified the specific Verse code that causes the crash, and found a workaround to get the code to compile and a session to launch. I don’t know if this is related.

FORT-1143211 has been created and its status is ‘Unconfirmed’. This is now in a queue to be reproduced and confirmed.