Greetings Hallsofmontezuma.
First let me thank you for the nice plugin. Every bit of SEO helps!
I am running WordPress 2.7.1 and AIOSEO 1.5.6. After reading the various posts above, I made certain that I have <?php wp_head(); ?> as the last entry before </head> in my header.php file. If you visit my site, https://MaxNutrients.com, you will notice that I am running a modified version of the Default 1.6 WordPress theme. So, I am hoping it will be straightforward to make this work. The main reason for me to use this is for three features: description, keywords, and the canonical url.
The problem I am experiencing is this. All of my pages, with the exception of my home page, display description and keyword meta tags.
I have not reviewed the plugin line-by-line, but I did look at my wp_postmeta table. Sure enough, it has description and keywords meta_keys for my home page’s post_id. If I change the home page to another of my pages, then the new page takes on the problem of the missing meta tags and the former home page meta tags appear.
I’m puzzled. Since others have made their plugin work, I am sure I have overlooked something basic, but I am not sure quite what that something might be.
TIA