Cue sheets and flac files

Thanks!

On a closer inspection, it's not all flac tracks that won't play (while the undivided flac will), but SOME... Therefore, you are right, it must be something about the cue sheet. I have copied the contents of two - 1 with the problem, 2 fine.

1 - Divides correctly, won't play

REM DISCID A50E2E1C
REM COMMENT "ExactAudioCopy v0.99pb3"
PERFORMER "Unknown Artist"
TITLE "Unknown Title"
FILE "Unknown Artist - Unknown Title.flac" WAVE
  TRACK 01 AUDIO
    TITLE "Track01"
    PERFORMER "Unknown Artist"
    INDEX 01 00:00:00
  TRACK 02 AUDIO
    TITLE "Track02"
    PERFORMER "Unknown Artist"
    INDEX 01 02:40:57
  TRACK 03 AUDIO
    TITLE "Track03"
    PERFORMER "Unknown Artist"
    INDEX 00 05:05:14
    INDEX 01 05:05:15
  TRACK 04 AUDIO
    TITLE "Track04"
    PERFORMER "Unknown Artist"
    INDEX 00 06:30:56
    INDEX 01 06:30:57
  TRACK 05 AUDIO
    TITLE "Track05"
    PERFORMER "Unknown Artist"
    INDEX 00 09:40:29
    INDEX 01 09:41:02
  TRACK 06 AUDIO
    TITLE "Track06"
    PERFORMER "Unknown Artist"
    INDEX 00 10:35:46
    INDEX 01 10:35:47
  TRACK 07 AUDIO
    TITLE "Track07"
    PERFORMER "Unknown Artist"
    INDEX 00 13:10:61
    INDEX 01 13:12:45
  TRACK 08 AUDIO
    TITLE "Track08"
    PERFORMER "Unknown Artist"
    INDEX 00 14:33:51
    INDEX 01 14:33:52
  TRACK 09 AUDIO
    TITLE "Track09"
    PERFORMER "Unknown Artist"
    INDEX 00 17:46:56
    INDEX 01 17:47:57
  TRACK 10 AUDIO
    TITLE "Track10"
    PERFORMER "Unknown Artist"
    INDEX 00 18:11:74
    INDEX 01 18:12:00
  TRACK 11 AUDIO
    TITLE "Track11"
    PERFORMER "Unknown Artist"
    INDEX 00 20:04:69
    INDEX 01 20:06:17
  TRACK 12 AUDIO
    TITLE "Track12"
    PERFORMER "Unknown Artist"
    INDEX 00 20:32:56
    INDEX 01 20:33:42
  TRACK 13 AUDIO
    TITLE "Track13"
    PERFORMER "Unknown Artist"
    INDEX 00 23:11:09
    INDEX 01 23:11:10
  TRACK 14 AUDIO
    TITLE "Track14"
    PERFORMER "Unknown Artist"
    INDEX 00 23:46:14
    INDEX 01 23:46:15
  TRACK 15 AUDIO
    TITLE "Track15"
    PERFORMER "Unknown Artist"
    INDEX 00 26:00:46
    INDEX 01 26:00:47
  TRACK 16 AUDIO
    TITLE "Track16"
    PERFORMER "Unknown Artist"
    INDEX 00 26:13:24
    INDEX 01 26:13:25
  TRACK 17 AUDIO
    TITLE "Track17"
    PERFORMER "Unknown Artist"
    INDEX 00 29:38:39
    INDEX 01 29:39:07
  TRACK 18 AUDIO
    TITLE "Track18"
    PERFORMER "Unknown Artist"
    INDEX 00 30:44:01
    INDEX 01 30:44:02
  TRACK 19 AUDIO
    TITLE "Track19"
    PERFORMER "Unknown Artist"
    INDEX 00 32:23:04
    INDEX 01 32:23:37
  TRACK 20 AUDIO
    TITLE "Track20"
    PERFORMER "Unknown Artist"
    INDEX 00 33:24:39
    INDEX 01 33:24:40
  TRACK 21 AUDIO
    TITLE "Track21"
    PERFORMER "Unknown Artist"
    INDEX 00 37:11:06
    INDEX 01 37:11:07
  TRACK 22 AUDIO
    TITLE "Track22"
    PERFORMER "Unknown Artist"
    INDEX 00 39:47:74
    INDEX 01 39:48:55
  TRACK 23 AUDIO
    TITLE "Track23"
    PERFORMER "Unknown Artist"
    INDEX 01 48:15:62
  TRACK 24 AUDIO
    TITLE "Track24"
    PERFORMER "Unknown Artist"
    INDEX 00 49:04:51
    INDEX 01 49:04:52
  TRACK 25 AUDIO
    TITLE "Track25"
    PERFORMER "Unknown Artist"
    INDEX 00 50:31:29
    INDEX 01 50:31:60
  TRACK 26 AUDIO
    TITLE "Track26"
    PERFORMER "Unknown Artist"
    INDEX 00 51:24:21
    INDEX 01 51:24:55
  TRACK 27 AUDIO
    TITLE "Track27"
    PERFORMER "Unknown Artist"
    INDEX 00 57:54:01
    INDEX 01 57:55:30
  TRACK 28 AUDIO
    TITLE "Track28"
    PERFORMER "Unknown Artist"
    INDEX 00 58:27:09
    INDEX 01 58:27:10

2 - Divides correctly, plays OK

REM GENRE Classical
REM DATE 1999
REM DISCID F50EE111
REM COMMENT "ExactAudioCopy v0.99pb3"
PERFORMER "Panocha Quartet"
TITLE "Antonin Dvorak - Miniatures"
FILE "Dvorak Miniatures - Panocha Quartet.flac" WAVE
  TRACK 01 AUDIO
    TITLE "Miniatures, Op. 75a - I. Cavatina. Moderato"
    PERFORMER "Panocha Quartet"
    ISRC CZA169701001
    INDEX 00 00:00:00
    INDEX 01 00:00:32
  TRACK 02 AUDIO
    TITLE "II. Capriccio. Poco allegro"
    PERFORMER "Panocha Quartet"
    ISRC CZA169702001
    INDEX 00 02:50:07
    INDEX 01 02:56:60
  TRACK 03 AUDIO
    TITLE "III. Romanza. Allegro"
    PERFORMER "Panocha Quartet"
    ISRC CZA169703001
    INDEX 00 05:22:10
    INDEX 01 05:25:42
  TRACK 04 AUDIO
    TITLE "IV. Elegia. Larghetto"
    PERFORMER "Panocha Quartet"
    ISRC CZA169704001
    INDEX 00 08:16:00
    INDEX 01 08:22:57
  TRACK 05 AUDIO
    TITLE "Two Waltzes from Op. 54 - I. Waltz in A major. Moderato"
    PERFORMER "Panocha Quartet"
    ISRC CZA169801062
    INDEX 00 14:39:70
    INDEX 01 14:44:55
  TRACK 06 AUDIO
    TITLE "II. Waltz in D major. Allegro vivace"
    PERFORMER "Panocha Quartet"
    ISRC CZA169802062
    INDEX 00 18:39:20
    INDEX 01 18:40:55
  TRACK 07 AUDIO
    TITLE "Bagatelles, Op. 47 - I. Allegretto scherzando"
    PERFORMER "Panocha Quartet"
    ISRC CZA169801087
    INDEX 00 21:21:55
    INDEX 01 21:25:70
  TRACK 08 AUDIO
    TITLE "II. Tempo di minuetto. Grazioso"
    PERFORMER "Panocha Quartet"
    ISRC CZA169802087
    INDEX 00 24:18:37
    INDEX 01 24:20:35
  TRACK 09 AUDIO
    TITLE "III. Allegretto scherzando"
    PERFORMER "Panocha Quartet"
    ISRC CZA169803087
    INDEX 00 27:31:27
    INDEX 01 27:32:35
  TRACK 10 AUDIO
    TITLE "IV. Canon. Andante con moto"
    PERFORMER "Panocha Quartet"
    ISRC CZA169804087
    INDEX 00 30:26:15
    INDEX 01 30:28:55
  TRACK 11 AUDIO
    TITLE "V. Poco allegro"
    PERFORMER "Panocha Quartet"
    ISRC CZA169805087
    INDEX 00 34:38:00
    INDEX 01 34:39:20
  TRACK 12 AUDIO
    TITLE "Quartet Movement in F major - Allegro vivace"
    PERFORMER "Panocha Quartet"
    ISRC CZA169600001
    INDEX 00 39:03:25
    INDEX 01 39:07:35
  TRACK 13 AUDIO
    TITLE "Cypresses - I. Death Reigns in Many a Human Breast. Allegro ma non troppo"
    PERFORMER "Panocha Quartet"
    ISRC CZA169302002
    INDEX 00 48:23:47
    INDEX 01 48:27:10
  TRACK 14 AUDIO
    TITLE "III. When Thy Sweet Glances on Me Fall. Andante"
    PERFORMER "Panocha Quartet"
    ISRC CZA169303002
    INDEX 00 50:50:67
    INDEX 01 50:52:65
  TRACK 15 AUDIO
    TITLE "IX. Thou Only Dear One, But for Thee. Moderato"
    PERFORMER "Panocha Quartet"
    ISRC CZA169309002
    INDEX 00 53:34:47
    INDEX 01 53:37:37
  TRACK 16 AUDIO
    TITLE "XI. Nature Lies Peaceful in Slumber and Dreaming. Allegro scherzando"
    PERFORMER "Panocha Quartet"
    ISRC CZA169311002
    INDEX 00 56:25:32
    INDEX 01 56:27:72
  TRACK 17 AUDIO
    TITLE "Nocturne in B major for Two Violins, Viola, Cello and Double Bass, Op. 40"
    PERFORMER "Panocha Quartet"
    ISRC CZA169200004
    INDEX 00 59:02:35
    INDEX 01 59:06:20