I've had no problem using lightboxes before with attachment images, but I've switched to a new theme called Quicknote and it seems that attachment images now instead link to the attachment page.
However, if I change the url to the file's URL directly, any lightbox plugin works just fine. Is there an easy way to mass convert all of my posts images to the image URL instead of the attachment URL?
Even better, does anyone have any idea why I might be linking to the attachment page instead of Lightbox? Could it be a setting left ticked somewhere?