Title: Upgrade Errors
Last modified: August 21, 2016

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# Upgrade Errors

 *  [JoshCa](https://wordpress.org/support/users/joshca/)
 * (@joshca)
 * [12 years, 2 months ago](https://wordpress.org/support/topic/upgrade-errors-5/)
 * Hi all,
 * Just upgraded a clients wordpress version from 2.X.X to 3.8.1, now being greeted
   with a lot of errors if someone can help?
 * Notice: Constant WP_DEBUG already defined in /content/shard2/Hosting/e/u/euphoriaholidays.
   co.uk/web/wp-config.php on line 86
 * Notice: load_plugin_textdomain was called with an argument that is deprecated
   since version 2.7 with no alternative available. in /content/shard2/Hosting/e/
   u/euphoriaholidays.co.uk/web/wp-includes/functions.php on line 3008
 * Notice: automatic_feed_links is deprecated since version 3.0! Use add_theme_support(‘
   automatic-feed-links’ ) instead. in /content/shard2/Hosting/e/u/euphoriaholidays.
   co.uk/web/wp-includes/functions.php on line 2908
 * Notice: has_cap was called with an argument that is deprecated since version 
   2.0! Usage of user levels by plugins and themes is deprecated. Use roles and 
   capabilities instead. in /content/shard2/Hosting/e/u/euphoriaholidays.co.uk/web/
   wp-includes/functions.php on line 3006
 * Notice: add_contextual_help is deprecated since version 3.3! Use get_current_screen()-
   >add_help_tab() instead. in /content/shard2/Hosting/e/u/euphoriaholidays.co.uk/
   web/wp-includes/functions.php on line 2908
 * Notice: has_cap was called with an argument that is deprecated since version 
   2.0! Usage of user levels by plugins and themes is deprecated. Use roles and 
   capabilities instead. in /content/shard2/Hosting/e/u/euphoriaholidays.co.uk/web/
   wp-includes/functions.php on line 3006
 * Fatal error: Call to undefined method Custom_Admin_Bar::add_group() in /content/
   shard2/Hosting/e/u/euphoriaholidays.co.uk/web/wp-includes/admin-bar.php on line
   221

Viewing 4 replies - 1 through 4 (of 4 total)

 *  [gunduzi](https://wordpress.org/support/users/gunduzi/)
 * (@gunduzi)
 * [12 years, 2 months ago](https://wordpress.org/support/topic/upgrade-errors-5/#post-4769624)
 * These errors are all related to plugins (or certain functions thereof) that are
   no longer supported in the new version you have upgraded to.
 * A suggestion would be to de-activate all your plugins & check them 1 by 1 (by
   re-activating) & see what works & what causes problems.
 * Many of these however you will need to replace with something else.
 *  Thread Starter [JoshCa](https://wordpress.org/support/users/joshca/)
 * (@joshca)
 * [12 years, 2 months ago](https://wordpress.org/support/topic/upgrade-errors-5/#post-4769671)
 * Hi Gunduzi,
 * I have disabled all plugins but still have the same errors.
 * What do you think are my options? I can’t really change themes as this was custom
   done (terribly) by another person.
 * Luckily enough the site still works to the public, just a quick flash of errors..
 *  Thread Starter [JoshCa](https://wordpress.org/support/users/joshca/)
 * (@joshca)
 * [12 years, 2 months ago](https://wordpress.org/support/topic/upgrade-errors-5/#post-4769696)
 * Seems strange that disabling the plugins does not work
 * _[Moderator Note: [No bumping](http://codex.wordpress.org/Forum_Welcome#No_Bumping),
   thank you.]_
 *  Thread Starter [JoshCa](https://wordpress.org/support/users/joshca/)
 * (@joshca)
 * [12 years, 2 months ago](https://wordpress.org/support/topic/upgrade-errors-5/#post-4769814)
 * Could I follow a tutorial like the below:
 * [http://thegreatblog.com/blog/7-easy-steps-to-manually-downgrade-wordpress-versions/](http://thegreatblog.com/blog/7-easy-steps-to-manually-downgrade-wordpress-versions/)
 * Or is this for similar versions, rather than the massive change from 3 to 2?

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Upgrade Errors’ is closed to new replies.

## Tags

 * [upgrade](https://wordpress.org/support/topic-tag/upgrade/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 4 replies
 * 2 participants
 * Last reply from: [JoshCa](https://wordpress.org/support/users/joshca/)
 * Last activity: [12 years, 2 months ago](https://wordpress.org/support/topic/upgrade-errors-5/#post-4769814)
 * Status: not resolved

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