opts not defined in before function Thumbnailhover [#828588]

I've created a View Slideshow using ThumbnailHover mode.
I have 2 "Main frame fields" (an animated GIF and caption) and 1 "Breakout field" (thumbnail image).
When I display the page, the Main image/caption does not change when I hover a thumbnail.

I am using Views 6.x-2.10 and Views Slideshow 6.x-2.1

My test page is here: http://98.247.71.133/clients/soundmetrics/slideshow-test-thumbnailhover

Drupal.settings javascript:

<!--//--><![CDATA[//><!--
jQuery.extend(Drupal.settings, { "basePath": "/clients/soundmetrics/", "viewsSlideshowThumbnailHover": { "#views_slideshow_thumbnailhover_main_homepage_slideshow-page_1": { "num_divs": 2, "teasers_last": 1, "id_prefix": "#views_slideshow_thumbnailhover_main_", "div_prefix": "#views_slideshow_thumbnailhover_div_", "vss_id": "homepage_slideshow-page_1", "view_id": "homepage_slideshow-page_1", "timeout": "5000", "sort": 1, "effect": "fade", "speed": "300", "start_paused": 0, "fade_value": 0.25, "hover_breakout": "teaser", "hover": "hover", "main_fields": { "field_slideshowgif_fid_1": "field_slideshowgif_fid_1", "field_slideshowcaption_value": "field_slideshowcaption_value", "field_slideshowgif_fid": 0 }, "breakout_fields": { "field_slideshowgif_fid": "field_slideshowgif_fid", "field_slideshowgif_fid_1": 0, "field_slideshowcaption_value": 0 }, "delay": "0", "fixed_height": "1", "random": "0", "pause": "1", "pause_on_click": "1", "remember_slide": 1, "remember_slide_days": "1", "pager_event": "mouseover", "controls": "1", "image_count": "1", "sync": "1", "advanced": "", "ie": { "cleartype": "true", "cleartypenobg": "false" }, "nowrap": "0" } } });
//--><!]]>

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<!--//--><![CDATA[//><!--
jQuery.extend(Drupal.settings, { "basePath": "/clients/soundmetrics/", "viewsSlideshowThumbnailHover": { "#views_slideshow_thumbnailhover_main_homepage_slideshow-page_1": { "num_divs": 2, "teasers_last": 1, "id_prefix": "#views_slideshow_thumbnailhover_main_", "div_prefix": "#views_slideshow_thumbnailhover_div_", "vss_id": "homepage_slideshow-page_1", "view_id": "homepage_slideshow-page_1", "timeout": "5000", "sort": 1, "effect": "fade", "speed": "300", "start_paused": 0, "fade_value": 0.25, "hover_breakout": "teaser", "hover": "hover", "main_fields": { "field_slideshowgif_fid_1": "field_slideshowgif_fid_1", "field_slideshowcaption_value": "field_slideshowcaption_value", "field_slideshowgif_fid": 0 }, "breakout_fields": { "field_slideshowgif_fid": "field_slideshowgif_fid", "field_slideshowgif_fid_1": 0, "field_slideshowcaption_value": 0 }, "delay": "0", "fixed_height": "1", "random": "0", "pause": "1", "pause_on_click": "1", "remember_slide": 1, "remember_slide_days": "1", "pager_event": "mouseover", "controls": "1", "image_count": "1", "sync": "1", "advanced": "", "ie": { "cleartype": "true", "cleartypenobg": "false" }, "nowrap": "0" } } });
//--><!]]>
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I also tried setting up a SingleFrame slideshow with all the options and that version is working correctly:
http://98.247.71.133/clients/soundmetrics/slideshow-test-singleframe

Any help/suggestions is greatly appreciated.