I guess you downloaded that script from this thread:
https://www.lfs.net/forum/post/1450538#post1450538
You have to download the other scripts aswell to make the Closebutton to work.
Also, what i think is that those scripts are really outdated.
Those scripts are updated, renamed and are enabled by default in Lapper.
See in addonsused.LPR in the 'includes' folder.
#------------------------------------------------------------------------------#
# CIF includes
# You can reorder these lines to change the tab order on the sub-menus
#------------------------------------------------------------------------------#
include ("./cif/cif.lpr"); # This MUST be first to define all of the CIF globals
# CIF Info Modules #################
include ("./cif/info_tops.lpr"); # Top output with interactive buttons, replaces tops.lpr, !top, !near, !qual, !nearqual
include ("./cif/info_who.lpr"); # Who, replaces the who,lpr module and !who command
# CIF Config Modules #################
include ("./cif/config_membership.lpr"); # Membership administration
include ("./cif/config_handicaps.lpr"); # Player Handicap Info
# CIF Help Modules #################
include ("./cif/help_general.lpr"); # General Help and !help command
include ("./cif/help_admin.lpr"); # Admin Help
include ("./cif/help_stats.lpr"); # Stats Help
include ("./cif/help_custom.lpr"); # Custom server Help
And i dont want a free server.
S2/S3 is really nice, try it out yourself by buying this game. You will support the developers with it.