Title: Cannot activate
Last modified: August 22, 2016

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# Cannot activate

 *  Resolved [traviseden](https://wordpress.org/support/users/traviseden/)
 * (@traviseden)
 * [11 years, 5 months ago](https://wordpress.org/support/topic/cannot-activate-15/)
 * I just tried to activate the plugin and got the following response:
 * The plugin does not have a valid header.
 * Please advise.
 * [https://wordpress.org/plugins/constant-contact-api/](https://wordpress.org/plugins/constant-contact-api/)

Viewing 5 replies - 1 through 5 (of 5 total)

 *  Thread Starter [traviseden](https://wordpress.org/support/users/traviseden/)
 * (@traviseden)
 * [11 years, 5 months ago](https://wordpress.org/support/topic/cannot-activate-15/#post-5505247)
 * And then I went to the plugins page and tried from there and it’s going.
 *  Plugin Author [Zack Katz](https://wordpress.org/support/users/katzwebdesign/)
 * (@katzwebdesign)
 * [11 years, 5 months ago](https://wordpress.org/support/topic/cannot-activate-15/#post-5505259)
 * So it’s working now?
 *  Thread Starter [traviseden](https://wordpress.org/support/users/traviseden/)
 * (@traviseden)
 * [11 years, 5 months ago](https://wordpress.org/support/topic/cannot-activate-15/#post-5505260)
 * Yes, thanks. I was hoping for a way to sign people up for events through WordPress,
   without sending them to CC, but it looks like CC doesn’t allow for that.
 *  [Phil Emery](https://wordpress.org/support/users/noise/)
 * (@noise)
 * [11 years, 5 months ago](https://wordpress.org/support/topic/cannot-activate-15/#post-5505460)
 * getting this as well. Deleted old versions via ftp. Install via “Add New” .
 * Downloads fine, but the gets the no valid header upon activation
 *  [EngagingSchools](https://wordpress.org/support/users/engagingschools/)
 * (@engagingschools)
 * [11 years, 5 months ago](https://wordpress.org/support/topic/cannot-activate-15/#post-5505464)
 * I updated the plugin on my site through the admin portal this morning and my 
   whole site crashed. Can anyone tell me why this might have happened and what 
   I can do to repair the issue? I don’t even have access to my WP admin portal.
 * [http://www.engagingschools.org](http://www.engagingschools.org)

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘Cannot activate’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/constant-contact-api_f6e5e6.svg)
 * [Constant Contact for WordPress](https://wordpress.org/plugins/constant-contact-api/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/constant-contact-api/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/constant-contact-api/)
 * [Active Topics](https://wordpress.org/support/plugin/constant-contact-api/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/constant-contact-api/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/constant-contact-api/reviews/)

 * 5 replies
 * 4 participants
 * Last reply from: [EngagingSchools](https://wordpress.org/support/users/engagingschools/)
 * Last activity: [11 years, 5 months ago](https://wordpress.org/support/topic/cannot-activate-15/#post-5505464)
 * Status: resolved