Well it depends on your meaning. If they won't show up "in game" as in when you launch a server none of the bricks appear here is what you have to do: when starting a server enable Support_LegacyDoors. That's it, select the JVS bricks and select Support_LegacyDoors and they should show up. If they don't show up as in they don't appear in your add-ons list, post console log.