Hi Nick,
You can include this in the pak file by adding some code to CopyBuildToStagingDirectory.automation.cs
inside CreateStagingManifest
just after we process
if (SC.StageTargetPlatform.StageMovies)
{…}
Add a call to SC.StageFiles including the file you want to stage.
Set the StageFileType.UFS. this file will be put into the pak file.
You will then need to modify the way you access that file at run time to use unreal file manager.
Let me know if you have any questions