500 error after update

Question

I had a working (test) blog, and during an update from 3.2.1 to 3.3.1 - something went wrong , I think the update did not finished..

Just before the Update, I have enabled a new theme (all functions and files made by me )

Since the update went wrong - I can not access my admin area (500 error) but the front end works just fine ...

The same blog and theme works without a problem on local machine .

I had deleted ALL files on server (except uploads) and updated with a new version - but to no avail.

any solutions to such a problem =??

Answer 1

In phpmyadmin search :

SELECT *
FROM wp_options
WHERE option_name = 'template'
OR option_name = 'stylesheet'
OR option_name = 'current_theme';

then :

UPDATE wp_options SET option_value = 'yourthemename' WHERE option_name = 'template';
UPDATE wp_options SET option_value = 'yourthemename' WHERE option_name = 'stylesheet';
UPDATE wp_options SET option_value = 'yourthemename' WHERE option_name = 'current_theme';

or if you want to go back to default (presuming some default exists)

SET option_value = 'default' WHERE option_name = 'template';

UPDATE wp_options SET option_value = 'default' WHERE option_name = 'stylesheet';

UPDATE wp_options SET option_value = 'default' WHERE option_name = 'current_theme';

note :

• template – the “Theme Name” as defined in style.css
• stylesheet – the actual name of your theme folder
• current_theme -the actual name of your theme folder

Answer 2

I received a 500 Error message after update the wordpress. However, the problem was not caused by the update process.

Your database server may corrupt a table(s). To fix this problem you should use phpMyAdmin or something else, and optimize/repair the tables.

It Works For Me!

Answer 3

Are there plugin installed? it's easy to make a 500 error if some plugin does something bad inside an if( is_admin() ) clause. Try to remove/rename plugins to isolate the problem.

Otherwise, just remove all files, unzip a freshly downloaded wordpress from wordpress.org, put your uploads back, and retry.