MD-0011-0 on Fab for UE 5.5 and 5.6 only, 5.7 installs correctly

Summary

Hi,
I need help with a Fab code plugin installation issue.

My plugin works locally in Unreal Engine 5.5, 5.6, and 5.7.
On Fab, it installs correctly for UE 5.7 only.
For UE 5.5 and UE 5.6, installation fails with MD-0011-0.

Important details:

I already uploaded 3 separate ZIP packages, one for each engine version.

In Included Files, the versions are already set up.

I already tried reuploading / forcing reprocessing.

The error still happens only on 5.5 and 5.6.

This strongly looks like an artifact/manifest generation or association issue on Fab for those engine versions.

Please check the artifact/manifest generation for the 5.5 and 5.6 builds of my listing.

Thanks.

What type of bug are you experiencing?

Plugins

Steps to Reproduce

Steps to reproduce

1.Open Fab in Epic Games Launcher with a machine that has Unreal Engine 5.5, 5.6, and 5.7 installed.

2.Go to my published Fab listing for Universal Pivot Baker.

3.Attempt to install the plugin to Unreal Engine 5.7 and verify that installation succeeds.

4.Attempt to install the same plugin to Unreal Engine 5.5.

5.Attempt to install the same plugin to Unreal Engine 5.6.

6.Observe that installation fails for 5.5 and 5.6 with error MD-0011-0, while 5.7 installs correctly.

Expected Result

Download and installs

Observed Result

Error MD-0011-0

Platform

Windows and Fab

Operating System

Windows