When you upgrade your WordPress version to the latest and greatest 3.3 version you may be greeted with an error page if you have the Popup Domination plugin installed and activated.
The error is similar to:
“Call to undefined function is_rtl() in /…/public_html/wp-includes/general-template.php on line 2102”
This error makes it impossible for you to access the admin area of your WordPress blog. Well, luckily the fix is easy although the developers have not officially released a fix for this problem.
Here’s what you need to do to fix your issue:
- Open and edit the file popup-domination.php found inside /wp-content/plugins/popup-domination/
- Find the line wp_admin_css( ‘theme-editor’ );
- Comment this line by placing // at the beginning of the line
- Save the file and upload to your WordPress blog
That’s it! You are fixed. Enjoy!