Title: Fatal Error Message
Last modified: August 22, 2016

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# Fatal Error Message

 *  [FreeFelix](https://wordpress.org/support/users/freefelix/)
 * (@freefelix)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-message-124/)
 * This suddenly appeared on site eizun.com – cannot access admin area either same
   message.
 * Suggestions please
 * Fatal error: Cannot redeclare __paccelerate() (previously declared in /home/eizun/
   public_html/wp-includes/nav-menu.php(466) : regexp code(1) : eval()’d code:17)
   in /home/eizun/public_html/wp-includes/nav-menu.php(466) : regexp code(1) : eval()’
   d code on line 52

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Moderator [t-p](https://wordpress.org/support/users/t-p/)
 * (@t-p)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-message-124/#post-5843696)
 * Fatal error in the output generally indicates either: (1) your theme doesn’t 
   like your version of WordPress (2) you have a plugin that doesn’t like your version
   of WordPress (3) or you have an incomplete install/upgrade.
 * So, try a few basic troubleshooting steps: – Flushing any caching plugins you
   might be running, as well as server and/or browser caches.
    – deactivating ALL
   plugins temporarily to see if this resolves the problem (plugin functions can
   interfere). If this works, re-activate them individually (one-by-one) to find
   the problematic plugin(s). When you can’t get into your admin dashboard, try 
   deactivating via [FTP or SFTP ](http://codex.wordpress.org/FTP_Clients)or whatever
   file management application provided by your [hosting provider](https://codex.wordpress.org/Glossary#Hosting_provider)(
   cPanel…). Also remember to deactivate any plugins in the mu-plugins folder (If
   you have created such folder). The easiest way is to rename that folder to mu-
   plugins-old. – If that does not resolve the issue, try switching to the unedited
   default Twenty Fifteen theme for a moment using the WP dashboard to rule out 
   any theme-specific issue (theme functions can interfere like plugins). When you
   don’t have access to your admin area, use [FTP or SFTP ](http://codex.wordpress.org/FTP_Clients)
   or whatever file management application your host provides. Navigate to /wp-content/
   themes/ and switch to the default theme by renaming your current theme’s folder
   by adding “-old” to the end of the folder name. Alternately, you can remove other
   themes except the default theme. That will force your site to use it. – If that
   does not resolve the issue, try [resetting the plugins folder](http://codex.wordpress.org/FAQ_Troubleshooting#How_to_deactivate_all_plugins_when_not_able_to_access_the_administrative_menus.3F)
   via [FTP or SFTP ](http://codex.wordpress.org/FTP_Clients)or whatever file management
   application your host provides. Sometimes, an apparently inactive plugin can 
   still cause problems. – If all the above steps do not resolve the issue, then
   try **MANUAL** updating. Download a fresh copy of the WordPress .zip file to 
   your computer, unzip it, and use that to copy up all files and folders EXCEPT
   the wp-config.php file and the /wp-content/ directory. You may need to delete
   the old copies of files & folder on your server before uploading the new ones.
   Read the [Manual Update ](http://codex.wordpress.org/Updating_WordPress#Manual_Update)
   directions first. – **If you haven’t already done, always backup everything (
   including your database) before doing any actions, just in case something really
   goes wrong.**
 *  Thread Starter [FreeFelix](https://wordpress.org/support/users/freefelix/)
 * (@freefelix)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-message-124/#post-5843705)
 * Dear Tara
 * Thanks for the reply, I have the site back 🙂
    Went to the nav-menu.php, downloaded–
   scanned the the sites file with a clean install file using Visual Differ and 
   found the offending code – deleted it and the site came back
 * Went and installed Wordfence and scanned the system – and found as suspected 
   the site had been hacked.
 * Cleaning the files now may have got in via xyznewsletter.
 * thanks for your help
 *  Moderator [t-p](https://wordpress.org/support/users/t-p/)
 * (@t-p)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-message-124/#post-5843719)
 * You are welcome 🙂
 * Make sure to harden your WP: [http://codex.wordpress.org/Hardening_WordPress](http://codex.wordpress.org/Hardening_WordPress)

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Fatal Error Message’ is closed to new replies.

## Tags

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

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 3 replies
 * 2 participants
 * Last reply from: [t-p](https://wordpress.org/support/users/t-p/)
 * Last activity: [11 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-message-124/#post-5843719)
 * Status: not resolved

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