Title: WordPress 4.0 Breaking
Last modified: August 22, 2016

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# WordPress 4.0 Breaking

 *  [mashwebdesign](https://wordpress.org/support/users/mashwebdesign/)
 * (@mashwebdesign)
 * [11 years, 9 months ago](https://wordpress.org/support/topic/wordpress-40-breaking-1/)
 * Hi,
 * I work with WordPress quite alot, i have updated an existing live site with wordpress
   4.0 and all plugins work fine!
 * However i am building a new site locally with a fresh local install of wordpress
   4.0, i am using the same plugins but when i try to add a variety of different
   plugins it breaks the backend of the website? Is this a bug with running WordPress
   4.0 locally or is it my installation?
 * Deleting the plugin make the backend work.
 * Plugins that are breaking locally are
 * Contact Form 7
    Custom Post Type UI Shift Nav
 * Any advice?
 * Adam

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

 *  Moderator [Samuel Wood (Otto)](https://wordpress.org/support/users/otto42/)
 * (@otto42)
 * WordPress.org Admin
 * [11 years, 9 months ago](https://wordpress.org/support/topic/wordpress-40-breaking-1/#post-5269797)
 * > it breaks the backend of the website
 * A bit vague, that. Without specific information on what breaks and how, then 
   you’re unlikely to get any useful information from other people.
 * Find out what plugin causes it, then ask that plugin’s author.
 *  Thread Starter [mashwebdesign](https://wordpress.org/support/users/mashwebdesign/)
 * (@mashwebdesign)
 * [11 years, 9 months ago](https://wordpress.org/support/topic/wordpress-40-breaking-1/#post-5269800)
 * Hi Samuel,
 * Thank you for taking the time to share you advice.
 * By breaks i mean, it displays a blank white page without any errors. As they 
   are established WordPress Plugins that are not working, I wanted to see whether
   any one else has had issues with WordPress 4.0 locally.
 * Adam
 *  Moderator [Samuel Wood (Otto)](https://wordpress.org/support/users/otto42/)
 * (@otto42)
 * WordPress.org Admin
 * [11 years, 9 months ago](https://wordpress.org/support/topic/wordpress-40-breaking-1/#post-5269818)
 * A white screen on a development site tells you that you need to turn on WP_DEBUG
   or display_errors in order to get the actual error message. Without the message,
   there’s not a lot that you can do to debug the problem. 🙂

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

The topic ‘WordPress 4.0 Breaking’ is closed to new replies.

 * In: [Localhost Installs](https://wordpress.org/support/forum/localhost-installs/)
 * 3 replies
 * 2 participants
 * Last reply from: [Samuel Wood (Otto)](https://wordpress.org/support/users/otto42/)
 * Last activity: [11 years, 9 months ago](https://wordpress.org/support/topic/wordpress-40-breaking-1/#post-5269818)
 * Status: not resolved

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