I have used this plugin and been happy with it. Today I created a new site, installed zen cart 1.5.4 and then installed latest version of SBA. I am getting a blank page after install. Clean install a second time of Zen Cart, then installed SBA one file at a time. The problem is general.php which is located in admin/includes/functions. Not sure why it is breaking latest version of Zen Desk, but it is.