Title: Fatal Error Last modified: August 19, 2016 --- # Fatal Error * [sunmaid28](https://wordpress.org/support/users/sunmaid28/) * (@sunmaid28) * [15 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-221/) * I don’t know what’s happened to my website but it now says this: * Fatal error: Call to undefined function wp_nav_menu() in /home/buildin2/public_html/ wordpress/wp-content/themes/mistylook/header.php on line 19 * I did a restore to my home directory backup – but it doesn’t seem to have made a difference. * PLEASE HELP! Viewing 3 replies - 1 through 3 (of 3 total) * Thread Starter [sunmaid28](https://wordpress.org/support/users/sunmaid28/) * (@sunmaid28) * [15 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-221/#post-1733355) * should have said you can see it here: [http://www.buildingbelief.com/](http://www.buildingbelief.com/) * [Justin Tadlock](https://wordpress.org/support/users/greenshady/) * (@greenshady) * [15 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-221/#post-1733378) * You need to upgrade to the latest version of WordPress, which is currently version 3.0.1. [http://wordpress.org/download/](http://wordpress.org/download/) * Thread Starter [sunmaid28](https://wordpress.org/support/users/sunmaid28/) * (@sunmaid28) * [15 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-221/#post-1733437) * That’s amazing worked like a charm! Thank you! Viewing 3 replies - 1 through 3 (of 3 total) The topic ‘Fatal Error’ is closed to new replies. * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) * 3 replies * 2 participants * Last reply from: [sunmaid28](https://wordpress.org/support/users/sunmaid28/) * Last activity: [15 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-221/#post-1733437) * Status: not resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics