i cannot start ioftpd by iogui,why?

i cannot start ioftpd by iogui,why?
i set the correct path,but right click on iogui,then select start ioftpd,there is no response;while stop ioftps selection works

iogui2.0.6 with ioftpd 5.8.5r

how can i fix it?

thx


//////////////////////////////////////////////////////
##################
# misc. settings #
##################
#

window_caption_online = ioGui2 - %(sitename) - %(online_all) users, %(bandwidth_total) kBps
window_caption_offline = ioGui2 - %(sitename) - Not connected.

# ----- optional -----
#
# textbox_fontname = Terminal
# textbox_fontsize = 6
#
# sitesicon_connected = F:\Documents\VBProjects\ioTOOLS\ioGui2\icons\onlin e.ico
# sitesicon_disconnected = F:\Documents\VBProjects\ioTOOLS\ioGui2\icons\offli ne.ico
#
# tabicon_console =
# tabicon_activity =
# tabicon_browser =
# tabicon_stats =
# tabicon_users =
# tabicon_groups =
# tabicon_settings =
# tabicon_results =



##########################
# activity list settings #
##########################
# refreshtime in ms
#

# ----- optional -----
# activityicon_idle = F:\Documents\VBProjects\ioTOOLS\ioGui2\icons\large .ico
# activityicon_up = F:\Documents\VBProjects\ioTOOLS\ioGui2\icons\user_ u.ico
# activityicon_down = F:\Documents\VBProjects\ioTOOLS\ioGui2\icons\user_ d.ico

# ------not yet------
# hide_self = 1
# who_refresh = 750



#############
# tray icon #
#############
# minimize_to_tray only works when show_trayicon is enabled
#

show_trayicon = 1
minimize_to_tray = 1
trayicon_text_online = [ioGui2] - %(sitename) - %(online_all) users, %(bandwidth_total) kBps
trayicon_text_offline = [ioGui2] - %(sitename) - Disconnected

# ----- optional -----
# trayicon_idle = F:\Documents\VBProjects\ioTOOLS\ioGui2\icons\tray_ i.ico
# trayicon_up = F:\Documents\VBProjects\ioTOOLS\ioGui2\icons\tray_ u.ico
# trayicon_down = F:\Documents\VBProjects\ioTOOLS\ioGui2\icons\tray_ d.ico
# trayicon_both = F:\Documents\VBProjects\ioTOOLS\ioGui2\icons\tray_ b.ico
# trayicon_offline = F:\Documents\VBProjects\ioTOOLS\ioGui2\icons\tray_ o.ico



#####################
# WinSSLWrap tunnel #
#####################
# for AUTH TLS support
#

ssl_tunnel_host = localhost
ssl_tunnel_port = 666



#####################
# SITE NUKE command #
#####################
#

site_nuke_syntax = site nuke %(name) %(mult) %(reason)
site_nuke_replace_spaces = .



##########
# Menu's #
##########
#

menu_tray = ioFTPD main site | $exec http://www.ioftpd.com
menu_tray = ioFTPD forum | $exec http://www.ioftpd.com/board/index.php?s=
menu_tray = - | $null
menu_tray = Start ioFTPD | $exec C:\Program Files\ioFTPD\system\ioftpd.exe
menu_tray = Kill ioFTPD | $kill C:\Program Files\ioFTPD\system\ioftpd.exe
menu_tray = - | $null
menu_tray = edit ioftpd.ini | $exec C:\Program Files\ioFTPD\system\ioftpd.ini
menu_tray = start flashfxp | $exec C:\Program Files\FlashFXP\flashfxp.exe
menu_tray = open console | $exec cmd.exe
menu_tray = - | $null
menu_tray = close ioGui | $exit

menu_browser = nuke | $nuke
menu_browser = wipe | %ftp site wipe %(name)
menu_browser = rescan | $ftp site rescan
menu_browser = refresh | $ftp site refresh
menu_browser = - | $null
menu_browser = chmod | $chmod
menu_browser = chattr (hide dir) | $chattr
menu_browser = - | $null
menu_browser = delete | $delete

menu_userlist = delete %(name) | %ftp site deluser %(name)
menu_userlist = copy... | $copyuser %(uid)

menu_grouplist = delete %(name) | %ftp site grpdel %(name)
menu_grouplist = (copy) | $copygroup %(gid)

menu_activity = kick CID %(cid) | $ftp site kill %(cid)
menu_activity = kick all %(user)@%(group) | $ftp site kick %(user)
menu_activity = (kick all of %(group)) | $null
menu_activity = (kick all in %(pwd)) | $null
menu_activity = (kick where ip=%(clientip)) | $null
menu_activity = (kick all) | $null
menu_activity = - | $null
menu_activity = copy IP | $copy %(clientip)
menu_activity = copy PWD | $copy %(pwd)