Last image in SlideViewer is blank

Last image in SlideViewer is blank

Hi, I have a Drupal site with Jquery slide viewer and something weird happens to the last slide in the gallery: when I click on the button to show it, surprisinly the image is blank.

The image exists and it has the same dimensions of the other four images. The problem regards only the last image in the slideshow.

Anybody has a clue?

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