Plugin conflict with slideshoww

Hi,

I have a website at http://www.excitingfundraiser.com. When I have the E-commerce plugin activated it somehow hides the slideshow on the homepage. I have no idea why. When I disable the plugin, the slideshow comes back. I really like this plugin, and would like to use it. Can anyone help me with this?

http://ww.wp.xz.cn/plugins/simple-e-commerce-shopping-cart/