hope someone here can solve my problem. I've installed All In One SEO (AIOSEO) plugins to my blog. The problem is - after input values for title, description and keyword in section (one inserting new post), then I saved and publish the post. But when get back to the same article to update the content, The AIOSEO plugins is BLANK. Have I done something wrong? any help.. will be much appriciated.
You might try re-downloading and installing it again. Or try the Platinum SEO pack. http://wordpress.org/extend/plugins/platinum-seo-pack/ it's a little more robust. If that gives you trouble as well you might consider re-installing Wordpress again if you're not to far along.
Did you try disabling other plugins one by one? it may be caused by other plugins. Try to disable them one by one until you find which plugin can cause this.
On the All in One SEO Plugin Options Configuration, make sure the second choice "Plugin Status" has "Enabled" selected. If it's not this problem, indeed, try to reinstall the plugin. I'm using more than 20 plugins and never had some compatibility problems between All in One SEO Plugin and others.