The problem is that the thickbox function is not working on my product images in my site, where it was working fine just last week.
I don’t think I have done anything to disable the thickbox function. (People are clicking on product images and instead of getting the thickbox, a new window opens in the browser): http://micamiseta.com/tienda/honduras/
I am using WordPress 2.8.6 and WP Shopping Cart plugin Version 188.8.131.52. Could it be I haven't updated to the latest versions? Also, I'm using the WPA Storefront theme.
Any idea where I should look to fix this? Is is in the plugin or theme files? I need to get this working asap. Thanks!