Title: Undefined function register_setting() in js_composer Last modified: September 21, 2017 --- # Undefined function register_setting() in js_composer * Resolved [davvvy](https://wordpress.org/support/users/davvvy/) * (@davvvy) * [8 years, 9 months ago](https://wordpress.org/support/topic/undefined-function-register_setting-in-js_composer/) * Hello, I am pretty new to WP, have built a couple of sites and really like working with it. However I’ve run into a problem with this development site I just updated to latest WP, themes, and plugins versions. I can browse the site alright, but if I try to go into wp-admin, or any of the other editing pages, the site crashes and returns this message: * Fatal error: Call to undefined function register_setting() in /home/mrktgu5/public_html/ bethscarehome/wp-content/plugins/js_composer/include/classes/settings/class-vc- settings.php on line 377 * I’ve searched extensively on these forums and elsewhere; I’ve used FTP to delete the plugin (js_composer, which I believe is needed for Virtual Composer) – that didn’t help at all, in that case I can even load the site on my browsers. I’m pretty much exhausted my capabilities to troubleshoot this issue and would like to seek help here. * Hopefully someone will know what to do, thank you all very much in advance. * David * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fundefined-function-register_setting-in-js_composer%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ Viewing 6 replies - 1 through 6 (of 6 total) * [Konstantinos Xenos](https://wordpress.org/support/users/xkon/) * (@xkon) * [8 years, 9 months ago](https://wordpress.org/support/topic/undefined-function-register_setting-in-js_composer/#post-9516138) * Hello and welcome to the forums ! * First of all `js_composer` is actually Virtual Composers base directory so you actually removed the whole plugin by removing that folder. That is probably why your front-end stoped working since everything was passing through VC before. * In the case of `register_setting()` is used in the Settings API of WordPress so that means it’s a function that is built-in into WordPress ( [https://codex.wordpress.org/Settings_API](https://codex.wordpress.org/Settings_API)) and this tells us that maybe your updates where not fully successful resulting into some corrupted files. * You can always go to `Dashboard -> Updates` menu on your Admin area and click` Re-Install Now` for the core files to be re-installed in case that fixes it. * If that doesn’t fix the issue and the plugin continues to give you errors about register_setting you can always contact the plugin’s authors since it’s a commercial plugin and you’re their customer 🙂 * Make sure to always keep a backups before changing / updating things to be safe. * Thread Starter [davvvy](https://wordpress.org/support/users/davvvy/) * (@davvvy) * [8 years, 9 months ago](https://wordpress.org/support/topic/undefined-function-register_setting-in-js_composer/#post-9516473) * Thank you for your fast response, Xenos. * Unfortunately I cannot access any of my admin pages on the site. Since I updated WP as well as several other plugins at the same time, does the error still indicate that it’s WP that may be corrupted? * If you think that’s the case, I guess I can try to do a manual re-install of WP. I’ll need to read up on that and try it out then. * [Konstantinos Xenos](https://wordpress.org/support/users/xkon/) * (@xkon) * [8 years, 9 months ago](https://wordpress.org/support/topic/undefined-function-register_setting-in-js_composer/#post-9516510) * It might be a number of things but since you don’t have a working site at the moment let’s try to solve that first. * You can do this: 1) Download WordPress 2) Connect to your server via FTP 3) rename the `wp-content/plugins/` folder into something else for now but do not delete it ( this will force WordPress to reset all your plugins ) 4) upload the` wp-includes` and `wp-admin` folders and by replacing the existing folders. * There’s no need to touch your wp-config, and no need to touch the /wp-content/( except the plugins ) so your files will be left as is. * That should get your WordPress back to a safe starting place to start re-installing plugins again and see if everything works as supposed to. * Again as I can’t stress this much, always create backups of at least 1 previous instance as a fallback. * Thread Starter [davvvy](https://wordpress.org/support/users/davvvy/) * (@davvvy) * [8 years, 9 months ago](https://wordpress.org/support/topic/undefined-function-register_setting-in-js_composer/#post-9517117) * Hi again Xenos, I got it fixed!!!! * I did everything as you laid out, but I had to also copy over all the files in the root directory of the new WP folder, as well as the loose files in the wp- content folder. Once I did those things, and also uploaded the new wp-admin and wp-includes folder, the last step was to rename my old plugins folder, which I had labeled plugins-old. * Bang, everything looked good, and I was also able to login to my wp-admin page( after WP made me update the database). I’m merrily editing away my site pages now, thank you again very much for your help! * Cheers, * David * [Konstantinos Xenos](https://wordpress.org/support/users/xkon/) * (@xkon) * [8 years, 9 months ago](https://wordpress.org/support/topic/undefined-function-register_setting-in-js_composer/#post-9517132) * No problem at all David, glad I could help 🙂 . Don’t forget to mark this topic as resolved to keep the forums nice and tidy ! * Thread Starter [davvvy](https://wordpress.org/support/users/davvvy/) * (@davvvy) * [8 years, 9 months ago](https://wordpress.org/support/topic/undefined-function-register_setting-in-js_composer/#post-9519107) * Done. Thank you again for a speedy resolution of my problem. 🙂 * David Viewing 6 replies - 1 through 6 (of 6 total) The topic ‘Undefined function register_setting() in js_composer’ is closed to new replies. * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) * 6 replies * 2 participants * Last reply from: [davvvy](https://wordpress.org/support/users/davvvy/) * Last activity: [8 years, 9 months ago](https://wordpress.org/support/topic/undefined-function-register_setting-in-js_composer/#post-9519107) * Status: resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics