[jQuery] jCarousel: No width/height set for items. This will cause an infinite loop. Aborting...

[jQuery] jCarousel: No width/height set for items. This will cause an infinite loop. Aborting...


when i implement jCarousel with options "wrap : 'both', vertical :
true, scroll : 1" and call prev method this alert apear.
I debg the script and discover that the "back" var in the "pos" method
is not set to true... so. to make t work i change the script from:
if (d == 0) {
    alert('jCarousel: No width/height set for items. This will cause an
infinite loop. Aborting...');
    return 0;
}
to:
if (d == 0) {
    if (v == 0) {
        alert('jCarousel: No width/height set for items. This will cause an
infinite loop. Aborting...');
        return 0;
    } else {
        if (v < clipping) v = clipping;
        break;
    }
}