This was a wonderful plugin until about two months ago, when it began breaking for no reason. I used it to create custom sidebars for a dozen pages , and they consistently worked across multiple upgrades of both WP and the plugin itself. Then, about 2 months ago the sidebars started to disappear for no reason at all. I would rebuild them, and then a different one would suddenly disappear. Today my primary sidebar is gone--not just on the front end, but on the back end, as well. I thought it was a fluke, but checking the forum it appears it is happening a lot and the developers have not given any suggestions for a fix. My advice -- check daily to make sure your sidebars are in place. Or better yet, switch to something that is more stable and/or has developer support.