Title: [Plugin: Contact Form 7] Multisite conflict?
Last modified: August 20, 2016

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# [Plugin: Contact Form 7] Multisite conflict?

 *  [Carrie Dils](https://wordpress.org/support/users/cdils/)
 * (@cdils)
 * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-contact-form-7-multisite-conflict/)
 * Hello, I recently updated Contact Form 7 to 3.2 on my WPMU installation and am
   now receiving the following error message(outputting before the <head> tag):
 * Warning: array_key_exists() [function.array-key-exists]: The first argument should
   be either a string or an integer in /home/cascade/public_html/wp-content/plugins/
   contact-form-7/includes/capabilities.php on line 14
 * The site itself renders without problem. Am I doing something wrong?
 * Thanks.
 * [http://wordpress.org/extend/plugins/contact-form-7/](http://wordpress.org/extend/plugins/contact-form-7/)

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

 *  [Michael Davis](https://wordpress.org/support/users/surfjam/)
 * (@surfjam)
 * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-contact-form-7-multisite-conflict/#post-2795684)
 * I’m having the same problem. I get the same warning twice since updating this
   morning.
 * Also, after updating posts, I get Warning: Cannot modify header information –
   headers already sent by (output started at [snip]/public_html/wp-content/plugins/
   contact-form-7/includes/capabilities.php:14) in [snip]/public_html/wp-includes/
   pluggable.php on line 866
 * and nothing additional loads on the page.
 *  [alve89](https://wordpress.org/support/users/alve89/)
 * (@alve89)
 * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-contact-form-7-multisite-conflict/#post-2795755)
 * Me as well…
 * “_Warning: array\_key\_exists() [function.array-key-exists]: The first argument
   should be either a string or an integer in /www/htdocs/w00f5329/wp-content/plugins/
   contact-form-7/includes/capabilities.php on line 14_”
 *  [rladner](https://wordpress.org/support/users/rladner/)
 * (@rladner)
 * [14 years, 3 months ago](https://wordpress.org/support/topic/plugin-contact-form-7-multisite-conflict/#post-2795820)
 * I am having this issue and do not know how to correct it. When I update single
   sites, it works just fine, but just not in multisites. Please help 🙂

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

 The topic ‘[Plugin: Contact Form 7] Multisite conflict?’ is closed to new replies.

 * ![](https://ps.w.org/contact-form-7/assets/icon.svg?rev=2339255)
 * [Contact Form 7](https://wordpress.org/plugins/contact-form-7/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/contact-form-7/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/contact-form-7/)
 * [Active Topics](https://wordpress.org/support/plugin/contact-form-7/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/contact-form-7/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/contact-form-7/reviews/)

 * 3 replies
 * 4 participants
 * Last reply from: [rladner](https://wordpress.org/support/users/rladner/)
 * Last activity: [14 years, 3 months ago](https://wordpress.org/support/topic/plugin-contact-form-7-multisite-conflict/#post-2795820)
 * Status: not resolved