I just installed and am experiencing a similar problem.
Basically nothing happens when I click on add to favs, select all, or add to cart. No error, just nothing. My site functions normally otherwise.
http://halftone.tv/galleries/gallery-878/
I have a custom theme, so tried using a default theme and the select all and add to favs works, but not the add to cart. Any particular direction would be awesome.
I tried disabling other plugins to the bare bones and resetting the plugin to default and still got the same problems.
WP 3.3.2
Image store 3.0.6
Thanks in advance!