In case anyone don't have a backup here is an Xlobby update from about two weeks ago (dated October 26, 2004) that works fine and should get you running again until Steve can fix the latest release.
http://www.xlobby.com/files/badabing/files/xlobby2.zip
remember the state of xlobby2.zip varies, its not always the most stable but usually it is. sometimes some new bugs slip through....if you see something major like xlobby crashing on moving a button report it to the bug forum.