Slideshow gallery disappears when using this plugin

Hello
I’m just testing your plugin on a site that uses the Slideshow Gallery plugin. When your plugin is activated, the Slideshow Gallery galleries disappear.
Any idea why this might be happening?
I also have the Easing Slider plugin on the site – it still works but the Pin button doesn’t come up on it.
Thanks for any help!

http://wordpress.org/extend/plugins/pinterest-pin-it-button-for-images/