Jessie Canon

I’m still loving all of the new features in WordPress 3.1, even though I have run into a few snags. After updating one of my client’s sites, I noticed that every single page and post was giving a 404 error. I did all of the usual things, checking my .htaccess file, made sure mod_rewrite was working etc… After seeing it wasn’t any of those I decided to disable my plugins to see if that was causing the problem, and YES!

If you are experiencing 404′s in WordPress 3.1 follow these steps:

1. Disable all of your plugins and see if that is the root of the problem.
2. Turn your plugins back on, 1 by 1 until you find the offending plugin.
3. Empty your WordPress cache.
4. Go to “Settings”, “Permalinks” and press save. This will refresh your permalink structure.

For me, the offending plugin was “Top Level Categories”. Glad that’s over with!

I use WordPress for many of my clients, including myself, so I’ve been ecstatic over the changes since 3.0. However, in 3.1 I noticed that some of my WordPress sites displayed the new admin toolbar on their pages, while others did not. If you are logged in and just see a blank space with no admin bar, you are probably missing the wp_footer() tag in your footer.php file. Once I added that in, poof, problem solved.