error enable ejabberd 15.06 captcha on windows

hi i can not starting ejabberd on windows 2008 with imagemagick

error :

2015-07-01 15:31:31 =CRASH REPORT====
  crasher:
    initial call: ejabberd_captcha:init/1
    pid: <0.316.0>
    registered_name: []
    exception exit: {{enoent,[{erlang,open_port,[{spawn,"C:\\Program Files\\ejabberd-15.06\\lib\\ejabberd-15.06\\priv\\bin\\captcha.sh 307701"},[stream,eof,binary]],[]},{ejabberd_captcha,cmd,1,[{file,"src/ejabberd_captcha.erl"},{line,610}]},{ejabberd_captcha,do_create_image,1,[{file,"src/ejabberd_captcha.erl"},{line,482}]},{ejabberd_captcha,check_captcha_setup,0,[{file,"src/ejabberd_captcha.erl"},{line,649}]},{ejabberd_captcha,init,1,[{file,"src/ejabberd_captcha.erl"},{line,415}]},{gen_server,init_it,6,[{file,"gen_server.erl"},{line,306}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,237}]}]},[{gen_server,init_it,6,[{file,"gen_server.erl"},{line,330}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,237}]}]}
    ancestors: [ejabberd_sup,<0.37.0>]
    messages: []
    links: [<0.298.0>]
    dictionary: []
    trap_exit: false
    status: running
    heap_size: 987
    stack_size: 27
    reductions: 348
  neighbours:
2015-07-01 15:31:31 =SUPERVISOR REPORT====
     Supervisor: {local,ejabberd_sup}
     Context:    start_error
     Reason:     {enoent,[{erlang,open_port,[{spawn,"C:\\Program Files\\ejabberd-15.06\\lib\\ejabberd-15.06\\priv\\bin\\captcha.sh 307701"},[stream,eof,binary]],[]},{ejabberd_captcha,cmd,1,[{file,"src/ejabberd_captcha.erl"},{line,610}]},{ejabberd_captcha,do_create_image,1,[{file,"src/ejabberd_captcha.erl"},{line,482}]},{ejabberd_captcha,check_captcha_setup,0,[{file,"src/ejabberd_captcha.erl"},{line,649}]},{ejabberd_captcha,init,1,[{file,"src/ejabberd_captcha.erl"},{line,415}]},{gen_server,init_it,6,[{file,"gen_server.erl"},{line,306}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,237}]}]}
     Offender:   [{pid,undefined},{name,ejabberd_captcha},{mfargs,{ejabberd_captcha,start_link,[]}},{restart_type,permanent},{shutdown,brutal_kill},{child_type,worker}]

please help me

Captcha generation is relying

Captcha generation is relying on Unix tools to generate the image. At the moment it will not work on Windows.
We updated the document site to make that clearer: CAPTCHA

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