Wordpress 2.9 Upgrade Problem | Internal Server Error. The server encountered an internal error or misconfiguration and was unable to complete your request.

December 24, 2009 by kutenk
Filed under: Wordpress 

My site was inaccessible just after trying to upgrade my Wordpress from 2.8.6 to 2.9. Fortunately, prior to upgrade, I made full backup using Wordpress Backup and saved it into server. Just after clicking update to 2.9 button, suddenly the upgrade process hang, then my site was inaccessible with the following error:

Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, support@myhostia.com and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

Apache/1.3.33 (Debian GNU/Linux webspace) Server at kutenk.com Port 80

“Error: the XML response that was returned from the server is invalid.
Received:”




Well, not only myself having upgrade problem with Wordpress 2.9. From wordpress forum, numerous bloggers experienced different kind of problems. This is because of different add-ons (conflicting themes or plugins) installed by different bloggers. If you have blogs without any add-ons, you’ll have no problem with the 2.9 upgrade.

I checked google for possible cause of the error message. People recommend to check .htaccess file and modified file permission. I tried to delete .htaccess file, but the problem remains. As I am not a technical person, I don’t know which file permission is right one, so I just take shortcut solution:

Reinstall fresh Wordpress 2.8.2, then restore my Wordpress database from backup copy. Sound simple, right?




After restoring backup database into fresh Wordpress 2.8.2 install, I still face numerous problems:

1. Server URL turned without www prefix.

My original site ( http://www.kutenk.com/ ) become http://kutenk.com/.

Here is the solution to change website URL:

Changing the URL directly in the database using phpMyAdmin. Here are the steps:

1. Backup your database and save the copy off-site.
2. Login to phpMyAdmin.
3. Click the link to your Databases.
4. A list of your databases will appear. Choose the one that is your WordPress database.
5. All the tables in your database will appear on the screen.
6. From the list, look for wp_options. Note: The table prefix of wp_ may be different if you changed it when installing.
7. Click on the small icon indicated as Browse.
8. A screen will open with a list of the fields within the wp_options table.
9. Under the field option_name, scroll down and look for siteurl.
10. Click the Edit Field icon which usually is found at the far left at the beginning of the row.
11. The Edit Field window will appear.
12. In the input box for option_value, carefully change the URL information to the new address.
13. Verify this is correct and click Go to save the information.
14. You should be returned to your wp-options table.
15. Look for the home field in the table and click Edit Field. Note There are several pages of tables inside wp_options. Look for the > symbol to page through them.
16. In the input box for option_value, carefully change the URL information to the new address.
17. Verify this is correct and click Go to save the information.
18. Delete the folder wp-content/cache (this is a new folder added with WordPress 2.0).
19. That is it.

2. Broken Wordpress Permalinks.

All my blog posts link are inaccessible/broken.� I used Custom Permalinks (/%postname%/), instead of the default one (Day and name ��� �http://www.kutenk.com/2009/12/23/sample-post/)

Here is the solution to fix broken Wordpress Permalinks:

Delete .htaccess file, then change Wordpress Permalink Settings into Default setting (ie: Day and name ��� �http://www.kutenk.com/2009/12/23/sample-post/). Unfortunately, this solution is not complete because when I revert it back to Custom Structure Setting (/%postname%/), some of the links are broken again. So I am left with default setting in the mean time.




3. Missing Wordpress Widgets

All Text/Html sidebar widgets are gone. This is easy to solve by recreating it manually again.

4. Weird Database Character Sets –  and ’ – Character Encoding Mismatch Problem

Somehow, some posts with special character like (’,-) was replaced with other weird characters.

� instead of �
—
’

I got plenty of strange  and ’ characters in Wordpress Posts.

Here is the solution to fix Weird Character Sets:

Firefox’s character encoding can mess things up too. If you see some of those wild and wacky characters, try to change Firefox Character Encoding. So if you are currently set to Western ISO-8859, try Unicode (UTF-8) and see what happens.

You have to comment out two lines in your wp-config.php file (found in your main blog directory). These are the two lines:
define(’DB_CHARSET’, ‘utf8′);
define(’DB_COLLATE’, ”);

Comment them out like this:
//define(’DB_CHARSET’, ‘utf8′);
//define(’DB_COLLATE’, ”);

In the mean time, DO NOT update your wordpress to version 2.9 yet, until some fixes are released.

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