unable to publish due to verse "internal" error

Summary

After a recent Epic update, this island became inaccessible due to a matchmaking error and the project crashed when attempting to open it. Epic provided a backup to recover access. After restoring the backup, the project opens correctly and works as expected in Playtests, but publishing is now blocked due to a persistent Verse “internal error”.

Please select what you are reporting on:

Creative

What Type of Bug are you experiencing?

Verse

Steps to Reproduce

Open the affected UEFN project that was restored using the Epic-provided backup.

Verify that the project opens successfully.

Run a Playtest (works correctly).

Attempt to publish a new version of the island.

Observe the Verse internal error preventing publication.

Expected Result

The project should publish successfully since:

The project opens without crashing.

Playtests work correctly.

No gameplay or Verse issues occur during testing.

Observed Result

Publishing fails every time due to a Verse “internal error”, even though:

The project functions correctly in Playtest.

No Verse errors are shown during gameplay.

The issue only occurs at publish time.

Platform(s)

PC – Windows

Island Code

1935-8084-1614

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Additional Notes

This issue started after an Epic update that caused matchmaking failures and project crashes.

Epic provided a backup to restore the project.

The backup successfully restored access to the project.

Since restoring the backup, the project works correctly but cannot be published due to this Verse error.

A screenshot of the error message is attached.

FORT-1039605 has been created and its status is ‘Unconfirmed’. This is now in a queue to be reproduced and confirmed.

Thanks!