[jQuery] jquery-1.1.3.1 with interface slider trouble

Hi all,
When i try jquery-1.1.3.1.pack.js with interface slider last pack on
IE6, i get a usual "Object doesn't support this property or method" on
the "$('.sliderPrice').Slider(" line,
even if i set no options. Works fine on ffx.
$('.sliderPrice').Slider(
{
accept : '.indicator'
}
);
Anybody has any idea what i should try?
Regards,
Phil