“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 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.