Image doesn't appear in slideshow in IE8

On http://www.pbagalleries.com/content/ in IE8 for some reason the big background image doesn't load. It does in all other browsers. What's missing?
SWB-ConsultingAsked:
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leakim971PluritechnicianCommented:
remove the loneless and useless comma on the last image :

{image : '/content/wp-content/uploads/2013/09/240399_1.jpg', title : '<h2>Sale 515: California & the American West</h2><p>San Francisco | September 12<sup>th</sup> 2013, 11am Pacific Time</p>', thumb : ''}, <----------------------- this one
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Dave BaldwinFixer of ProblemsCommented:
The image by itself will load but IE8 says you have a javascript error.

Webpage error details

User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET4.0C; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.4506.2152; .NET4.0E)
Timestamp: Tue, 10 Sep 2013 00:15:17 UTC


Message: 'r.options.slides[...].url' is null or not an object
Line: 11
Char: 2525
Code: 0
URI: http://www.pbagalleries.com/content/wp-content/themes/boilerplate/js/custom/slider/supersized.3.2.7.min.js
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