Title: Fatal error
Last modified: August 19, 2016

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# Fatal error

 *  [pixxy](https://wordpress.org/support/users/pixxy/)
 * (@pixxy)
 * [18 years ago](https://wordpress.org/support/topic/fatal-error-51/)
 * I’ve uploaded all the new files to upgrade to 2.5.1 but when I try to upgrade
   it comes up with “Fatal error: Call to undefined function wp_upgrade() in /home/
   athena/public_html/wp/wp-admin/upgrade.php on line 46”.

Viewing 1 replies (of 1 total)

 *  [MichaelH](https://wordpress.org/support/users/michaelh/)
 * (@michaelh)
 * [18 years ago](https://wordpress.org/support/topic/fatal-error-51/#post-783464)
 * I’d first consider deleting the WordPress files, then reupload, per Steps 7 and
   8 in [Upgrading_WordPress_Extended](http://codex.wordpress.org/Upgrading_WordPress_Extended).

Viewing 1 replies (of 1 total)

The topic ‘Fatal error’ is closed to new replies.

## Tags

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

 * In: [Installing WordPress](https://wordpress.org/support/forum/installation/)
 * 1 reply
 * 2 participants
 * Last reply from: [MichaelH](https://wordpress.org/support/users/michaelh/)
 * Last activity: [18 years ago](https://wordpress.org/support/topic/fatal-error-51/#post-783464)
 * Status: not resolved

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