Title: [Plugin: Google Content Experiments] Not working? Last modified: August 20, 2016 --- # [Plugin: Google Content Experiments] Not working? * Resolved [ben_nz](https://wordpress.org/support/users/ben_nz/) * (@ben_nz) * [13 years, 9 months ago](https://wordpress.org/support/topic/plugin-google-content-experiments-not-working/) * I added this code immediately after the of the header.php file… * * Yet I still get [this ‘fatal error’](https://dl.dropbox.com/u/26766139/Google_Content_Experiments.PNG) on the page that I add the script code to. * Any thoughts on this? I’ve used this plugin successfully before, and can’t get my head around why its not working this time. * Seems related to what was added to the header.php file, but tried it on two different themes, and still no joy. * Your thoughts most welcome! * -Ben * [http://wordpress.org/extend/plugins/google-content-experiments/](http://wordpress.org/extend/plugins/google-content-experiments/) Viewing 3 replies - 1 through 3 (of 3 total) * Plugin Author [Glenn Mulleners](https://wordpress.org/support/users/glennm/) * (@glennm) * [13 years, 9 months ago](https://wordpress.org/support/topic/plugin-google-content-experiments-not-working/#post-3002931) * Hi Ben, * The function `wp_get_theme` exists since WordPress 3.4.0. * I see that you’re still using version 3.3.2 on your site. Try to update to the latest version of WordPress and see if that resolves the issue. * Thread Starter [ben_nz](https://wordpress.org/support/users/ben_nz/) * (@ben_nz) * [13 years, 9 months ago](https://wordpress.org/support/topic/plugin-google-content-experiments-not-working/#post-3002958) * That worked! Thanks a lot for that. * I sure spent a bit of time pulling my hair out over this, so I definitely think it would be great if the requirement to update wordpress could be added to the plugin’s installation instructions. * Thanks again~ Ben * Plugin Author [Glenn Mulleners](https://wordpress.org/support/users/glennm/) * (@glennm) * [13 years, 9 months ago](https://wordpress.org/support/topic/plugin-google-content-experiments-not-working/#post-3003035) * I’ve updated the **Requires:** on the plugin page to 3_.4.0 or higher_ and added the **Call to undefined function `wp_get_theme`** question to the FAQ. Viewing 3 replies - 1 through 3 (of 3 total) The topic ‘[Plugin: Google Content Experiments] Not working?’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/google-content-experiments_9db5c0. svg) * [Google Content Experiments](https://wordpress.org/plugins/google-content-experiments/) * [Frequently Asked Questions](https://wordpress.org/plugins/google-content-experiments/#faq) * [Support Threads](https://wordpress.org/support/plugin/google-content-experiments/) * [Active Topics](https://wordpress.org/support/plugin/google-content-experiments/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/google-content-experiments/unresolved/) * [Reviews](https://wordpress.org/support/plugin/google-content-experiments/reviews/) * 3 replies * 2 participants * Last reply from: [Glenn Mulleners](https://wordpress.org/support/users/glennm/) * Last activity: [13 years, 9 months ago](https://wordpress.org/support/topic/plugin-google-content-experiments-not-working/#post-3003035) * Status: resolved