One thing is that with that kind of system you should never save e.g. object IDs directly. Saving something like "PlayerNoJet" or "BL_ID = 130" would be more reliable than "object 2344", "object 12387" as things will not be created in the same order for the next time you run the server and may not even be right. (that ID might be a brick, player or just not used if you run the server with fewer add-ons, or a datablock if you have more)