Title: ERROR WHEN SIGNING UP
Last modified: August 30, 2016

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# ERROR WHEN SIGNING UP

 *  [tlcbytaragmailcom](https://wordpress.org/support/users/tlcbytaragmailcom/)
 * (@tlcbytaragmailcom)
 * [10 years, 10 months ago](https://wordpress.org/support/topic/error-when-signing-up-2/)
 * Thank you for fixing the issue I had a couple of weeks ago with the KWS error.
   I am now still seeing two issues:
    1) When installing, I get an error “This plugin
   does not have a valid header” I am on a SiteGround Shared hosting package if 
   that helps 2) I have a Form Designer fSign Up form with a drop down menu. When
   submitting an email and submitting the form the error message “A CONTACT CANNOT
   BE ADDED WITHOUT LISTS.” appears. I do have lists and the plugin is connected
   to the CC API. Any suggestions on the cause/fix? Thank you!
 * [https://wordpress.org/plugins/constant-contact-api/](https://wordpress.org/plugins/constant-contact-api/)

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Thread Starter [tlcbytaragmailcom](https://wordpress.org/support/users/tlcbytaragmailcom/)
 * (@tlcbytaragmailcom)
 * [10 years, 10 months ago](https://wordpress.org/support/topic/error-when-signing-up-2/#post-6281136)
 * I also see this error on the Contact page when looking at my lists:
    Warning:
   substr() expects parameter 1 to be string, array given in /home/dogfisha/public_html/
   wp-content/plugins/constant-contact-api/vendor/constantcontact/constantcontact/
   src/Ctct/ConstantContact.php on line 841
 *  [nickth](https://wordpress.org/support/users/nickth/)
 * (@nickth)
 * [10 years, 10 months ago](https://wordpress.org/support/topic/error-when-signing-up-2/#post-6281501)
 * I got the same error:
    The plugin constant-contact-api/form-designer.php has 
   been deactivated due to an error: The plugin does not have a valid header.
 * Site is: [http://www.pitkinpolitics.org/](http://www.pitkinpolitics.org/)

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘ERROR WHEN SIGNING UP’ 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/)

## Tags

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

 * 2 replies
 * 2 participants
 * Last reply from: [nickth](https://wordpress.org/support/users/nickth/)
 * Last activity: [10 years, 10 months ago](https://wordpress.org/support/topic/error-when-signing-up-2/#post-6281501)
 * Status: not resolved