Title: WP 4.0 error
Last modified: August 22, 2016

---

# WP 4.0 error

 *  Resolved [gk](https://wordpress.org/support/users/gkalus/)
 * (@gkalus)
 * [11 years, 6 months ago](https://wordpress.org/support/topic/wp-40-error/)
 * Tried to activate this plugin got the following error. This is a fresh install
   of WP 4.0
    “Plugin could not be activated because it triggered a fatal error.”
 * [https://wordpress.org/plugins/betteroptin/](https://wordpress.org/plugins/betteroptin/)

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

 *  Plugin Author [ThemeAvenue](https://wordpress.org/support/users/themeavenue/)
 * (@themeavenue)
 * [11 years, 6 months ago](https://wordpress.org/support/topic/wp-40-error/#post-5446008)
 * Unfortunately I won’t be able to do anything with so little information. Please
   head over to our official support forum at [http://betteropt.in](http://betteropt.in)
   and try to give us more details about your error. You should try to activate 
   mode debug and see if you can get more details about the fatal error.
 *  Plugin Author [siamkreative](https://wordpress.org/support/users/siamkreative/)
 * (@siamkreative)
 * [10 years, 8 months ago](https://wordpress.org/support/topic/wp-40-error/#post-5446217)
 * I’ll mark this thread as resolved as we didn’t receive any follow up on this.

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

The topic ‘WP 4.0 error’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/betteroptin_b9a0ad.svg)
 * [BetterOptin](https://wordpress.org/plugins/betteroptin/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/betteroptin/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/betteroptin/)
 * [Active Topics](https://wordpress.org/support/plugin/betteroptin/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/betteroptin/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/betteroptin/reviews/)

 * 2 replies
 * 3 participants
 * Last reply from: [siamkreative](https://wordpress.org/support/users/siamkreative/)
 * Last activity: [10 years, 8 months ago](https://wordpress.org/support/topic/wp-40-error/#post-5446217)
 * Status: resolved