Help Using Slideshowplugin

I purchased this plugin- slideshowplugin from http://www.slideshowplugin.com, followed all the instructions, uploaded my photos, copied and pasted the short code on my posts and the page is just blank. The code is not working. I uploaded other photos, copied and pasted code but still no slide in the posts.
If you have any experiences with this pluging, please help me. Thanks.