Title: Call to undefined function mc4wp_replace_variables() Last modified: August 21, 2016 --- # Call to undefined function mc4wp_replace_variables() * Resolved [jazzmofo](https://wordpress.org/support/users/jazzmofo/) * (@jazzmofo) * [12 years, 7 months ago](https://wordpress.org/support/topic/call-to-undefined-function-mc4wp_replace_variables/) * Hi Danny, * I just installed the Mailchimp for WP lite. Configured the settings. Added the“[ mc4wp-form]”. Hit save and got this error: * Fatal error: Call to undefined function mc4wp_replace_variables() in /home/xxxxxxxx/ domains/supersnelgezond.nl/public_html/wp-content/plugins/mailchimp-for-wp/includes/ MC4WP_Lite_Form.php on line 56 * (replaced one directory name with xxxxx for security reasons) * The post did not save after this error, so I could hit back and delete the “[ mc4wp-form]”. * Can you please assist? * Thanks in advance, Carlo * [http://wordpress.org/plugins/mailchimp-for-wp/](http://wordpress.org/plugins/mailchimp-for-wp/) Viewing 13 replies - 1 through 13 (of 13 total) * Plugin Author [Danny van Kooten](https://wordpress.org/support/users/dvankooten/) * (@dvankooten) * [12 years, 7 months ago](https://wordpress.org/support/topic/call-to-undefined-function-mc4wp_replace_variables/#post-4201865) * Hi Carlo, * Just to be clear, you got this error after trying to save a post with the `[mc4wp- form]` shortcode in it? * If so, which (other) plugins are you running? * Thread Starter [jazzmofo](https://wordpress.org/support/users/jazzmofo/) * (@jazzmofo) * [12 years, 7 months ago](https://wordpress.org/support/topic/call-to-undefined-function-mc4wp_replace_variables/#post-4201881) * Hi Danny, that is correct. I am running the following list of plugins: * Broken Link Checker selecteren Captcha selecteren Contact Form 7 selecteren GD Star Rating selecteren Google XML Sitemaps selecteren Juiz Last Tweet Widget selecteren MailChimp for WP Lite selecteren Outbound Link Manager selecteren Print Friendly and PDF selecteren Quick Cache selecteren Redirection selecteren Relevanssi selecteren Subscribe To “Double-Opt-In” Comments selecteren Transposh Translation Filter selecteren UK Cookie Consent selecteren Use Google Libraries selecteren Widget Logic selecteren WordPress SEO selecteren Wp-Insert selecteren WP-Optimize selecteren WP Minify selecteren * Plugin Author [Danny van Kooten](https://wordpress.org/support/users/dvankooten/) * (@dvankooten) * [12 years, 7 months ago](https://wordpress.org/support/topic/call-to-undefined-function-mc4wp_replace_variables/#post-4201904) * Thanks Carlo, looking into the issue and the best fix for it. * Thread Starter [jazzmofo](https://wordpress.org/support/users/jazzmofo/) * (@jazzmofo) * [12 years, 7 months ago](https://wordpress.org/support/topic/call-to-undefined-function-mc4wp_replace_variables/#post-4201905) * Cheers, thanks for the swift replies! * Plugin Author [Danny van Kooten](https://wordpress.org/support/users/dvankooten/) * (@dvankooten) * [12 years, 7 months ago](https://wordpress.org/support/topic/call-to-undefined-function-mc4wp_replace_variables/#post-4201923) * Hi Carlo, * The Quick Cache plugin was conflicting. Fixed this in version 1.2.5, should be available from your admin panel within a few minutes. * Would you be so kind to [leave a review on the plugin](http://wordpress.org/support/view/plugin-reviews/mailchimp-for-wp?rate=5#postform) after you set everything up? Much appreciated! * Thread Starter [jazzmofo](https://wordpress.org/support/users/jazzmofo/) * (@jazzmofo) * [12 years, 7 months ago](https://wordpress.org/support/topic/call-to-undefined-function-mc4wp_replace_variables/#post-4201944) * Hi Danny, I am running Versie: 1.2.5 now. However the error is still the same. I also cleared the cache, just to be sure. After that a shortly deactivated my quick cache plugin. Even then, the error still persists. Kind regards, Carlo * Thread Starter [jazzmofo](https://wordpress.org/support/users/jazzmofo/) * (@jazzmofo) * [12 years, 7 months ago](https://wordpress.org/support/topic/call-to-undefined-function-mc4wp_replace_variables/#post-4201946) * (PS I am calling it a night, tomorrow is a new day) * Plugin Author [Danny van Kooten](https://wordpress.org/support/users/dvankooten/) * (@dvankooten) * [12 years, 7 months ago](https://wordpress.org/support/topic/call-to-undefined-function-mc4wp_replace_variables/#post-4201951) * Hi Carlo, * My bad, forgot to commit the actual fix and just updated the version number instead. I did not push out a new version number but did commit the fix now, so re-downloading the plugin will fix it (tomorrow). * Have a good night! * Thread Starter [jazzmofo](https://wordpress.org/support/users/jazzmofo/) * (@jazzmofo) * [12 years, 7 months ago](https://wordpress.org/support/topic/call-to-undefined-function-mc4wp_replace_variables/#post-4201964) * Hi Danny, had to check before I went to sleep. Error is gone, post is saved, form shows. Will continue tomorrow. Cheers! * Plugin Author [Danny van Kooten](https://wordpress.org/support/users/dvankooten/) * (@dvankooten) * [12 years, 7 months ago](https://wordpress.org/support/topic/call-to-undefined-function-mc4wp_replace_variables/#post-4202000) * Mooi! Glad I could help Carlo, good luck on your website! And thanks for helping me track down this error. * [DESERT_KING](https://wordpress.org/support/users/desert_king/) * (@desert_king) * [11 years, 11 months ago](https://wordpress.org/support/topic/call-to-undefined-function-mc4wp_replace_variables/#post-4202193) * hello Danny, * I have the similer problem ” Fatal error: Call to undefined function mc4wp_replace_variables() in D:\wamp\www\gobeshona\wp-content\plugins\mailchimp-for-wp\includes\integrations\ class-integration.php on line “ * Would kind help me out of here 🙁 * Plugin Author [Danny van Kooten](https://wordpress.org/support/users/dvankooten/) * (@dvankooten) * [11 years, 11 months ago](https://wordpress.org/support/topic/call-to-undefined-function-mc4wp_replace_variables/#post-4202194) * Hi Desert King, * This is fixed in the next version of the plugin, which will be available later today. Thanks for reporting! * [DESERT_KING](https://wordpress.org/support/users/desert_king/) * (@desert_king) * [11 years, 11 months ago](https://wordpress.org/support/topic/call-to-undefined-function-mc4wp_replace_variables/#post-4202195) * **Hi Danny, Thank you so much for quick response. i have another issue 🙂 below : * **1. while user signup via “social login” then no subscription email send to that new user. How we resolve this ?** * note: sorry for my bd ENGLINSh 🙂 * thanx, Viewing 13 replies - 1 through 13 (of 13 total) The topic ‘Call to undefined function mc4wp_replace_variables()’ is closed to new replies. * ![](https://ps.w.org/mailchimp-for-wp/assets/icon-256x256.png?rev=1224577) * [MC4WP: Mailchimp for WordPress](https://wordpress.org/plugins/mailchimp-for-wp/) * [Frequently Asked Questions](https://wordpress.org/plugins/mailchimp-for-wp/#faq) * [Support Threads](https://wordpress.org/support/plugin/mailchimp-for-wp/) * [Active Topics](https://wordpress.org/support/plugin/mailchimp-for-wp/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/mailchimp-for-wp/unresolved/) * [Reviews](https://wordpress.org/support/plugin/mailchimp-for-wp/reviews/) * 13 replies * 3 participants * Last reply from: [DESERT_KING](https://wordpress.org/support/users/desert_king/) * Last activity: [11 years, 11 months ago](https://wordpress.org/support/topic/call-to-undefined-function-mc4wp_replace_variables/#post-4202195) * Status: resolved