Trying to replicate state by saving/loading a scenario file won't work with SSU. Among other possible issues, the GPC state isn't fully saved during launch and OMS burns, so these won't be handled correctly when the saved scenario is loaded in another Orbitersim instance.Well, it is a problem if you are attempting to replicate vessel state between two instances of Orbiter, which is what I am doing: http://orbiter-forum.com/showthread.php?p=451291&postcount=25