Goto the server page, choose server properties and change the max. Players amount... This defaults to what you have set in your server.properties file. SpaceBukkit doesn't change player amounts. Also, you don't have to post 3 times, you would've got your answer after your first post as I got notified. Sure you removed the spacemodule jar in toolkit/modules? As this installs SpaceBukkit for you.. EDIT by Moderator: merged posts, please use the edit button instead of double posting.