Title: JavaScript errors in admin panel after update to 4.1
Last modified: August 22, 2016

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# JavaScript errors in admin panel after update to 4.1

 *  [yosef.boaelite](https://wordpress.org/support/users/yosefboaelite/)
 * (@yosefboaelite)
 * [11 years, 3 months ago](https://wordpress.org/support/topic/javascript-errors-in-admin-panel-after-update-to-41/)
 * Hi,I’ve recently (2days ago) updated my WP website to 4.1, using automatic update
   option. I’ve also updated all plugins and themes on the website.
 * Now, on several pages of admin panel, mostly which are related to template layout(
   like Edit Post) I’m getting JS errors, which results in lack of functionality
   of those pages. For example, I cannot set my front page Posts to be fullwidth–
   and it’s Very bad, since I have A Lot of traffic for this page, which is broken
   now…
 * Any help will be highly appreciated

Viewing 6 replies - 1 through 6 (of 6 total)

 *  [Will Schmierer](https://wordpress.org/support/users/officialwill/)
 * (@officialwill)
 * [11 years, 3 months ago](https://wordpress.org/support/topic/javascript-errors-in-admin-panel-after-update-to-41/#post-5713307)
 * Have you tried disabling all plugins and reactivating one by one to see if an
   active plugin may be causing conflicts with the WP update? I would start there,
   it’s possible a plugin you’re using on site has not been updated to work with
   the current version of WordPress and causing issues? I hope this helps target
   the issue.
 *  Thread Starter [yosef.boaelite](https://wordpress.org/support/users/yosefboaelite/)
 * (@yosefboaelite)
 * [11 years, 3 months ago](https://wordpress.org/support/topic/javascript-errors-in-admin-panel-after-update-to-41/#post-5713345)
 * Well, I did this but with no success..
 * I actually found a solution, but it’s really only a patch, to get my site to 
   work somehow:
    1) downgrade jQuery version – changed in /wp-includes/script-loader.
   php from local jquery.js (ver 1.11.1) to //ajax.googleapis.com/ajax/libs/jquery/
   1.8.3/jquery.min.js, the one that was before.
 * 2)
    found and fixed (after like 4hrs of debugging) a coding error in my old theme
 *  Thread Starter [yosef.boaelite](https://wordpress.org/support/users/yosefboaelite/)
 * (@yosefboaelite)
 * [11 years, 3 months ago](https://wordpress.org/support/topic/javascript-errors-in-admin-panel-after-update-to-41/#post-5713348)
 * I assume it’s all because I run very old theme (Choices by [http://www.kriesi.at/](http://www.kriesi.at/)).
   Also the previous guy, who worked on this site did a lot hardcoding etc. Which
   doesn’t make upgrading easier..
 *  [WPyogi](https://wordpress.org/support/users/wpyogi/)
 * (@wpyogi)
 * [11 years, 3 months ago](https://wordpress.org/support/topic/javascript-errors-in-admin-panel-after-update-to-41/#post-5713349)
 * Sounds like you should find a new theme?
 *  Thread Starter [yosef.boaelite](https://wordpress.org/support/users/yosefboaelite/)
 * (@yosefboaelite)
 * [11 years, 3 months ago](https://wordpress.org/support/topic/javascript-errors-in-admin-panel-after-update-to-41/#post-5713352)
 * Agree, but since current one was changed a lot, including hardcoding things in
   templates, I think it will be very hard to copy all the settings to a new one.
   I’m really only a few weeks working on WP and don’t know how to switch to totally
   new theme and keep my settings.
 *  [WPyogi](https://wordpress.org/support/users/wpyogi/)
 * (@wpyogi)
 * [11 years, 3 months ago](https://wordpress.org/support/topic/javascript-errors-in-admin-panel-after-update-to-41/#post-5713364)
 * Theme settings are theme-specific so no, you won’t be able to “keep” them. What
   you may want to do is make a copy of your site in a separate WP install in a 
   sub-directory and start working on the new version while leaving the old one 
   up until you’re ready to go.
 * [http://codex.wordpress.org/Giving_WordPress_Its_Own_Directory](http://codex.wordpress.org/Giving_WordPress_Its_Own_Directory)
 * Check out the Duplicator plugin for copying the site.

Viewing 6 replies - 1 through 6 (of 6 total)

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## Tags

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

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 6 replies
 * 3 participants
 * Last reply from: [WPyogi](https://wordpress.org/support/users/wpyogi/)
 * Last activity: [11 years, 3 months ago](https://wordpress.org/support/topic/javascript-errors-in-admin-panel-after-update-to-41/#post-5713364)
 * Status: not resolved

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