Issues with custom events

My game runs perfectly in the editor viewport but, upon packaging or playing the game through the editor as a stand alone game then i run into problems with custom events.

I have made many sequences with events. These events should then fire custom events stored on level blueprints. It not workign when i play as a stand alone game and regardless of where the event is on the timeline.

This has been a real problem and is slowing me down and if anyone could share some light that would be great.

Further Information

The custom events are stored on sub-level blueprints and not on the persistent as I need to be able to update some of the level’s objects.