Title: Fatal error warning, cannot be activated.
Last modified: August 30, 2016

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# Fatal error warning, cannot be activated.

 *  Resolved [lucaslem](https://wordpress.org/support/users/lucaslem/)
 * (@lucaslem)
 * [10 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-warning-cannot-be-activated/)
 * Hi Dennis,
 * Just tried to install this on a local site I’m building but getting this error
   upon activation:
 *     ```
       Plugin could not be activated because it triggered a fatal error.
   
       Warning: require_once(LOCAL-PATH-TO-MY-SITE/mysite.dev/wp-content/plugins/multisite-language-switcher/includes/MslsMenu.php): failed to open stream: No such file or directory in LOCAL-PATH-TO-MY-SITE/mysite.dev/wp-content/plugins/multisite-language-switcher/MultisiteLanguageSwitcher.php on line 60
       ```
   
 * I’ve used this plugin with great success in the past so not sure what’s going
   on here :/
 * Thanks for any help you can offer!
 * [https://wordpress.org/plugins/mslsmenu/](https://wordpress.org/plugins/mslsmenu/)

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

 *  Thread Starter [lucaslem](https://wordpress.org/support/users/lucaslem/)
 * (@lucaslem)
 * [10 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-warning-cannot-be-activated/#post-6869703)
 * Just FYI I used the [snippets from your docs](http://msls.co/integration-snippets-and-examples/)
   to sort this out manually so no rush, but it would be great to figure out what
   the issue is… in case it happens to others 🙂
 *  Plugin Author [Dennis Ploetner](https://wordpress.org/support/users/realloc/)
 * (@realloc)
 * [10 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-warning-cannot-be-activated/#post-6869807)
 * Great catch, Lucas! Thanks a lot! Version 1.3.1 solves this problem.
 *  Thread Starter [lucaslem](https://wordpress.org/support/users/lucaslem/)
 * (@lucaslem)
 * [10 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-warning-cannot-be-activated/#post-6869918)
 * You bet! Happy to help 🙂

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

The topic ‘Fatal error warning, cannot be activated.’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/mslsmenu.svg)
 * [MslsMenu](https://wordpress.org/plugins/mslsmenu/)
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 * 3 replies
 * 2 participants
 * Last reply from: [lucaslem](https://wordpress.org/support/users/lucaslem/)
 * Last activity: [10 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-warning-cannot-be-activated/#post-6869918)
 * Status: resolved