Using it for only uassets at the moment and not umaps. If you breakpoint in IPlatformFilePak in OpenRead when you go to load the map, you should be able to tell if it’s at least finding the map in the pak file. If it is, then the problem is in the streaming/replace references part. I don’t think my code handles umaps right now so I can’t really test it out and we’re finishing up a milestone, so I can’t spend the time right now to work on it. But that’s a feature I think we will need so I’ll definitely be looking at it in the near future.