“Uncaught Error: Call to a Member Function add_notice()” When Adding Posts from Front-End

Overview of the Issue

The issue happens when you submit a form in the front-end and this form adds a new post.

In some circumstance, you may see the error below:

Uncaught Error: Call to a member function add_notice() on null 

in wp-content/plugins/sitepress-multilingual-cms/inc/wpml-private-actions.php:33

This issue is fixed in WPML Multilingual CMS 3.6.0. Updating solves it on your site, so you only need this workaround if you can’t update yet.

This issue will be resolved in the 3.6.0 release.

Meanwhile, you can download the CMS Beta Package 3.5.3.2-b.1, which will contain only this fix.

If updating doesn’t fix it, ask a support question and we’ll look into it with you.