Images are broken

The images on my slider were broken, but it was still pulling in the meta data and style info.

Site: http://www.hawkingspost.com

The original slider was using full width images and a custom template that utilized custom fields/post meta to make the images link.

** The current slider is working because i am using the full text with link wrap as a work around. **

I think it has something to do with permissions and timthumb.

I have upgraded to the most recent version of the plugin, but it was also not working on version 1.5.

thank you!

http://ww.wp.xz.cn/extend/plugins/wp-slick-slider/