DIG: crash at the first scene (space shuttle)

scummvm: svn 22/07/06
game: dig french version

To reproduce the crash, just press esc during the
intro. The space shuttle appears and scummvm crashes
without any error message.

With debug level 5, i got:

Set music state: stateAstShip, ASTERO~1.IMU
IMuseDigital::fadeOutMusic
startMusicBundle(ASTERO~1.IMU)
IMuseDigital::startSound(1100)
Opening hashed: D:\Jeux\ScummVM\Dig\DIGMUSIC.bun
Opening hashed: D:\Jeux\ScummVM\Dig\DIGMUSIC.bun
flushTracks()
refreshScripts()
switchToNextRegion(track:0)
getJumpIdByRegionAndHookId() region:0, hookId:0
getJumpIdByRegionAndHookId() region:0, hookId:0
switchToNextRegion-sound(1100) select region 0,
curHookId: 0
getRegionOffset() region:0
getDataFromRegion() region:0, offset:0, size:17640,
numRegions:3
flushTracks()
refreshScripts()
flushTracks()
refreshScripts()
getDataFromRegion() region:0, offset:17640,
size:8820, numRegions:3
flushTracks()
refreshScripts()
getDataFromRegion() region:0, offset:26460,
size:8820, numRegions:3
flushTracks()
refreshScripts()
getDataFromRegion() region:0, offset:35280,
size:8820, numRegions:3
flushTracks()
refreshScripts()
getDataFromRegion() region:0, offset:44100,
size:8820, numRegions:3
flushTracks()
refreshScripts()
IMuseDigital::setPriority(112, 0)
startSfx(112)
IMuseDigital::startSound(112)
IMuseDigital::setVolume(112, 42)
getDataFromRegion() region:0, offset:52920,
size:8820, numRegions:3
switchToNextRegion(track:1)
getJumpIdByRegionAndHookId() region:0, hookId:0
getJumpIdByRegionAndHookId() region:0, hookId:0
switchToNextRegion-sound(112) select region 0,
curHookId: 0
getRegionOffset() region:0
getDataFromRegion() region:0, offset:0, size:6615,
numRegions:1
flushTracks()
refreshScripts()