jQuery sliders don't work suddenly [closed]

[Gaulpnand]

I have a website, veluwenkamp.nl. I've been encountering some errors, but I can't resolve these.The first error affects the background slider. It doesn't work anymore, and I didn't touch anything.\[quote\] Uncaught TypeError: Object function (e,t){return new v.fn.init(e,t,n)} has no method 'vegas' www.veluwenkamp.nl:55\[/quote\]The plugin is: http://wordpress.org/extend/plugins/slideshow-jquery-image-gallery/The second error happens in the pages at Wat Doen We. There supposed to be a slider at each page, but it suddenly vanished. I couldn't find any errors in the Google Chrome javascript Console.The plugins is: http://wordpress.org/extend/plugins/site-background-slider/