errore AGK: Unsupported audio type

[miki_pisa]

ciao,
ho provato a ridimensionare un file avi con auto gordian knot 2.48beta.
Mi viene riportato un errore:

EXCEPTION: Unsupported audio type

Il log e':

[17/09/2008 9.06.27] AutoGK 2.48b
[17/09/2008 9.06.27] OS: WinXP (5.1.2600).2
[17/09/2008 9.06.27] Job started.
[17/09/2008 9.06.27] Input file: ****.avi
[17/09/2008 9.06.27] Input codec: DivX 5
[17/09/2008 9.06.27] Source duration: 43mn 5s 520ms
[17/09/2008 9.06.27] Output file: ****.avi
[17/09/2008 9.06.27] Output codec: DivX
[17/09/2008 9.06.27] Audio 1: 192 Kbps MPEG-1/2 L3 2ch
[17/09/2008 9.06.27] Subtitles: none
[17/09/2008 9.06.27] Format: AVI
[17/09/2008 9.06.27] Target size: 380Mb
[17/09/2008 9.06.27] Custom resolution settings: fixed width of 720 pixels
[17/09/2008 9.06.27] Audio 1 settings: Auto
[17/09/2008 9.06.27] Standalone support enabled: MTK/Sigma
[17/09/2008 9.06.27] Started encoding.
[17/09/2008 9.06.27] Source resolution: 720x528
[17/09/2008 9.06.27] Source fps: 25
[17/09/2008 9.06.27] Analyzing source.
[17/09/2008 9.36.53] Source is considered to be progressive.
[17/09/2008 9.36.54] Output will contain 64638 frames
[17/09/2008 9.36.54] Demuxing audio.
*************************************
EXCEPTION: Unsupported audio type.
*************************************
il gspot mi dice che il codec audio e' installato:

http://img57.imageshack.us/img57/4462/immaginezc4.th.jpg (http://img57.imageshack.us/my.php?image=immaginezc4.jpg)

cosa posso fare???

grazie