Right after having loaded attribute images and submitted, images do not display in Preview, and I get an error in image_switcher.js line 40:

function uc_attr_img_activate(obj) {
38
39 // Display the name of what is selected
40 $(".AddToCart .AttributeImages label span.CurrentValue").html(obj.alt);

uc_attr_img_activate is called with obj 'undefined'.

Any clue to what could cause this?

I'm running Drupal 5.

Thank you