Title: FATAL ERROR!!! Last modified: August 19, 2016 --- # FATAL ERROR!!! * [jasqttganut](https://wordpress.org/support/users/jasqttganut/) * (@jasqttganut) * [16 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-162/) * Hello Guys!! * Really need your help. I’ve just uploaded two different themes and have gotten fatal error messages on each. The themes are Splix and Grey Dove. The fatal error message for Splix is: * Fatal error: Call to undefined function wp_logout_url() in /home/gatorval/public_html/ wp-content/themes/splix.1.0.0/splix/sidebar.php on line 29 * and the fatal error message for Grey Dove is: * Call to undefined function post_class() in /home/gatorval/public_html/wp-content/ themes/greydove/index.php on line 14 * Don’t know exactly what I did wrong. Clicked on “Activate (Theme Name)” and this is what occurred. Your direction regarding this matter would be greatly appreciated! Thanks! Viewing 13 replies - 1 through 13 (of 13 total) * [Kailash](https://wordpress.org/support/users/kailash1/) * (@kailash1) * [16 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-162/#post-1412723) * Try to re-upload both the themes and see if it works or not. * [esmi](https://wordpress.org/support/users/esmi/) * (@esmi) * [16 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-162/#post-1412728) * [@jasqttganut](https://wordpress.org/support/users/jasqttganut/): You’re using quite an old version of WordPress so many themes will no longer be compatible with your WP version. Try upgrading to 2.9.2. * [huck1010](https://wordpress.org/support/users/huck1010/) * (@huck1010) * [15 years, 11 months ago](https://wordpress.org/support/topic/fatal-error-162/#post-1412792) * hey guys i’m having the same problem with the fatal error message. How do I sign into my blog if not through the site which is now down? * [WPpremium](https://wordpress.org/support/users/wppremium/) * (@wppremium) * [15 years, 10 months ago](https://wordpress.org/support/topic/fatal-error-162/#post-1412793) * [@huck1010](https://wordpress.org/support/users/huck1010/) Can you paste the exact error you’re receiving? * [Shoofs](https://wordpress.org/support/users/shoofs/) * (@shoofs) * [15 years, 10 months ago](https://wordpress.org/support/topic/fatal-error-162/#post-1412794) * Hey guys… * I get this error message every time I try to open the webpage. I can’t access admin log-in, or home page, or anything else for that matter! * “Fatal error: Call to undefined function hybrid_get_prefix() in /home1/gsailorg/ public_html/kherrberr/wp-content/themes/hybrid-news/functions.php on line 27” * Thanks * [chrismitch88](https://wordpress.org/support/users/chrismitch88/) * (@chrismitch88) * [15 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-162/#post-1412802) * Help required: I have just installed a new theme but am now receiving this error message: * Fatal error: Call to undefined function hybrid_get_prefix() in /home/ucajour1/ public_html/mitchell/wp-content/themes/hybrid-news/functions.php on line 27 * Now cannot even log in to alter anything…Any ideas? * [reverbism](https://wordpress.org/support/users/reverbism/) * (@reverbism) * [15 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-162/#post-1412816) * Anyone find a solution to this problem?? * [nsperalta](https://wordpress.org/support/users/nsperalta/) * (@nsperalta) * [15 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-162/#post-1412817) * I was working in my theme, which I loaded yesterday. Was working with plugins( facebook specifically) when I started getting this error message: * Fatal error: Cannot redeclare comment_user_details_begin() (previously declared in /home/chipper1/public_html/wp-content/plugins/simple-facebook-connect/sfc- comments.php:284) in /home/chipper1/public_html/wp-content/plugins/tp/tp.php on line 560 * Now everything is gone! I can’t access the site from anywhere, and the theme doesn’t seem to be installed. Surely I don’t have to start over (wish there was a ‘back’ button!) Help? What did I do? * [Rev. Voodoo](https://wordpress.org/support/users/rvoodoo/) * (@rvoodoo) * [15 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-162/#post-1412818) * you have a conflict between 2 plugins SFC, and TP * use FTP or a file manager if your host offers one, and delete one of them. * [Rev. Voodoo](https://wordpress.org/support/users/rvoodoo/) * (@rvoodoo) * [15 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-162/#post-1412819) * > Anyone find a solution to this problem?? * Yes, read the error message. All the fatal error codes being listed on this page point to a plugin or theme. Delete the plugin or theme * [nsperalta](https://wordpress.org/support/users/nsperalta/) * (@nsperalta) * [15 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-162/#post-1412820) * I appreciate that, but don’t see how to delete since I can no longer access anything. I will try going through FTP – I am no expert! * [friedson](https://wordpress.org/support/users/friedson/) * (@friedson) * [15 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-162/#post-1412821) * Any ideas on how to fix this? Fatal error: Call to undefined function is_site_admin() in /webroot/t/h/thein018/primary/www/wp-content/plugins/auto-join-groups/bn-auto- join-group.php on line 32 * [esmi](https://wordpress.org/support/users/esmi/) * (@esmi) * [15 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-162/#post-1412822) * Delete the auto-join-groups plugin via FTP. * Closing this thread as it is now 10 months old. Viewing 13 replies - 1 through 13 (of 13 total) The topic ‘FATAL ERROR!!!’ is closed to new replies. ## Tags * [fatal](https://wordpress.org/support/topic-tag/fatal/) * 13 replies * 11 participants * Last reply from: [esmi](https://wordpress.org/support/users/esmi/) * Last activity: [15 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-162/#post-1412822) * Status: not resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics