missing half rest in pdf

[Jay Hamilton]

The printout for this score in the 'volta' is missing the half rest which is in 
the code and I don't see an example in the pdf manual that tells me what I am 
doing to cause that.

\version "2.10.25"
\header {
  title = "Desafinado for alto"
  composer = "Antonio Carlos Jobim"

  copyright = \markup { \tiny \override #'(baseline-skip . 0.5)
\center-align
        {  "All rights reserved "
    "see http://creativecommons.org/licenses/by-nd/2.5/";
               } }
}

melody = \relative c' {
\clef treble
\key d \major
\time 2/2
#(set-global-staff-size 24)
\repeat volta 2 {
r8 a'4 b8 cis4 d cis4. b8 bes4 b d4. bes8 bes2 ~ bes1 r8 b4 cis8 d4 e
d4. cis8 c4 cis a'4. c,8 c2 ~ c1}
\alternative { { r8 b a'g fis e4 g8 ~ g4. fis8 c4 cis dis8 fis dis2 b4 
c1 r8 f4 e8 d4 b f'4. e8 d4 b d4. bes8 bes2 ~ bes} {r8 a'4 g8 fis e4 g8 ~ g4. 
fis e4 d e8 d e2. ~ e2 r 
%I have put the double brackets at the end of the line above which is where it 
should be but that didn't work either
cis4 dis cis8 dis4 cis8 ~ cis4 b bes b cis1 ~ cis2 r4 bes} }
des4 es des8 es4 des8 ~ des4 b bes b des4. aes8 des2 ~ des1 r des4 es8 f4 ges 
aes4 ges bes, b des8 es des es des2 ~ des r4 des e fis e fis e d cis d e b8 e ~ 
e b e4 ~
e4 r r8 b e fis g4 fis g fis a g fis g e1 ~ e4 r2. r8 a,4 b8 cis4 d
cis4. b8 bes4 b d4. bes8 bes2 ~ bes1 r8 b4 cis8 d4 e d4. cis8 c4 cis b' bes a 
gis 
g b r fis a gis g fis g fis e d fis2. cis4 e2. b8 cis d d d d d4 d r8 b4 cis8 
d4 d 
d8 d d d a'4 g ~ g2. b,8 cis d d d d d4 cis8 d ~ d4 r8 cis c4 cis e4. d8 d2 ~ 
d2. r4       
\bar "|."


}

\score {
\new Staff \melody
\layout { }
\midi { }
}



Yours-
Jay

Jay Hamilton
www.soundand.com
206-328-7694