I am noticing that this once reliable Context Widget that I have used on about 40 websites, is now not working either. Choosing to display by url and deleting that last forward slash, they won’t show. They will show without URL, but that’s not what I want. So I switched to Display Widgets. It’s checkboxes for each page. Not sure it’s the solution you are looking for, but when your design relies on widget display, it’s important that they work, right? I am using wp 3.5.1 and Widget Context Version 0.8.1.