[Plugin: WP Social Slider – Social Activity Viewer Plugin for WordPress] Missing /images/like.png?

In your /css/site/styles.css for the #wpss_slider_ol tag, the background code on line 14 references an image that doesn’t exist:

background: url('../../images/like.png') left center no-repeat;

I nixed that line without problem (so far), but if you update the plugin, you should fix it.

http://wordpress.org/extend/plugins/wp-social-slider/