Woozone Coding Error

Fatal error: Call to undefined method aaAmazonWS::set_the_plugin() in
/home1/test/public_html/wp-content/plugins/woozone/aa-framework/amz.helper.class.php
on line 315

I keep getting this error code when I try to install the WooZone plugin. I saw one person was able to fix the code, but I need help. Any suggestions?