Not runing under cygwin

[Allan Spagnol Comar]

I downloaded and installed cygwin and lilypond for windows. now when I
try to run lilypond I got the following error message:

PDF output not found. Error log:
In unknown file:
   ?: 32* [get-coding-vector "latin1"]
In /usr/share/lilypond/2.4.2/scm/encoding.scm:
 124: 33* [caddr ...
 124: 34* [get-coding "latin1"]
 105: 35  (let ((entry #)) (if entry (cons # #) (if # # #)))
    ...
 107: 36  [cons "latin1.enc" ...
 107: 37* [force #<promise #<procedure #f ()>>]
In unknown file:
   ?: 38* [#<procedure #f ()>]
In /usr/share/lilypond/2.4.2/scm/encoding.scm:
  76: 39* [get-coding-from-file "latin1.enc"]
  65: 40  (let* ((coding #) (com #) (vec #) (tab #)) (list com vec tab))
  65: 41* [read-encoding-file "latin1.enc"]
  15: 42  (let* ((path #) (unused #) (raw #) (string #) ...) (cons command vecto
r))
  17: 43* [ly:gulp-file #f]

/usr/share/lilypond/2.4.2/scm/encoding.scm:17:15: In procedure ly_gulp_file in e
xpression (ly:gulp-file path):
/usr/share/lilypond/2.4.2/scm/encoding.scm:17:15: Wrong type argument in positio
n 1 (expecting string): #f
A full log is in the file test.log

what should I do to resolve that ?