How To Fix – WordPress Fatal error: Call to undefined function is_rtl() in /public_html/wp-includes/general-template.php on line 2102

December 21, 2011 34 Comments

I just updated a blog to WordPress 3.3 via the automatic update and I got the following error when I tried to go to WP Admin Dashboard…

Fatal error: Call to undefined function is_rtl() in /home/perfect/public_html/wp-includes/general-template.php on line 2102

But thank God, the solution is easy.

The problem is because the PopUp Domination plugin seems is not yet compatible with WP 3.3.

So here’s how to fix it:

  1. Login to your Site Using FTP
  2. Navigate to your WordPress Plugins File
  3. Find the popup-domination file
  4. Change the plugin name of it as this will Deactivate it
  5. Go to your WP Dashboard

That’s it! Problem will be fixed!

This error prevents you from going to the administration dashboard of your blog.

UPDATE: POSSIBLE FIX FOUND!

  1. Go into plugin’s folder and open the file, ‘popup-domination.php’.
  2. Search for the line that says: wp_admin_css( ‘theme-editor’ ); and simply add 2 characters before it. Add // and it will look like this: // wp_admin_css( ‘theme-editor’ );
  3. Save the file and re-upload it to its directory
  4. Reactivate Popup Domination plugin in your dashboard area.

This comments out the line and tells WP to ignore it. This line is the one that is messing up WordPress. I’ve tried and works for me. You can try it too. I hope this helps!

What’s Next?

If you want to double your sales with existing traffic in JUST 3 CLICKS, go download for free Page Expiration Robot WP Plugin and easily start turning your WP Pages or posts into one-time offers automatically and perpetually!

John Socratous

My passion and mission is to turn REAL "problems" into REAL "businesses" that will help 1000's of REAL people around the world -- and that's what I do since 2005 in multiple niches! To run my business and manage my team I just need my laptop and an internet connection (and that's what matters!). Sometimes I work from cafes, hotel lobbies or home with (or without) my pijamas. :D

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Let me know your thoughts and feedback:

WordPress

34 Responses to “How To Fix – WordPress Fatal error: Call to undefined function is_rtl() in /public_html/wp-includes/general-template.php on line 2102”

  1. Sarah Reply December 22, 2011 at 2:01 pm

    Thanks for this super simple fix – just got this error on two blogs I was updating; everything’s fixed now. You’re a lifesaver!

  2. Sam Reply December 24, 2011 at 12:45 pm

    Hi, thanks for this just had this error and issue now fixed :-)

  3. Jimmy Reply December 30, 2011 at 2:45 am

    Thanks John
    I was pulling my hair out trying to figure out what happened…

    You saved my ass on this one

  4. Thomas Pedersen Reply December 30, 2011 at 8:25 am

    Thx. Looked around and was able to find that it had something to do with a plugin, but noone mentioned which plugin they had problems with, so awesome that you wrote it. Cuss that was the plugin that I apparently had problems with. Unfortunately the blog I updated first is the blog where I use that plugin mostly… :(

  5. Franck Reply December 30, 2011 at 7:31 pm

    Thanks a lot John ! I will have a relax afternoon now :)

  6. pinpin huang Reply January 2, 2012 at 4:06 am

    Thanks a million.. Really helpful. Almost desperate.. Thanks to google too :D

  7. Jimmy Reply January 3, 2012 at 6:20 am

    Hey Thanks a bunch for this. I actually installed a development server of WP and tested the upgrade and got this error. Fortunately not to any production blogs with PopDom. I’ll do a post and link. From my Blog

  8. Jimmy Reply January 3, 2012 at 6:32 am

    Hey did a short blog post pointing folks to your super helpful article. http://wp.me/p1TtGa-7r

    Thanks

    Jimmy Tango

  9. Szymon Janik Reply January 5, 2012 at 10:56 am

    Thank You! It was really helpfull. I hope, I Guess, They will make a compatible version to WP 3.3

    Thanks agn,
    NETbloger

  10. Mike Reply January 6, 2012 at 12:34 am

    Anyone experience this that doesn’t have PopupDomination installed?

    • John Socratous Reply January 7, 2012 at 8:27 am

      Hey Mike, try renaming the plugins within your wp-content/plugins one at a time and try logging in to your wp-admin until you find which plugin is causing you this error. It must be a plugin conflict.

  11. Paslode Reply January 7, 2012 at 3:35 am

    One word….. Champion. I had this feeling of impending doom when i got his error.

  12. Vipul Reply January 8, 2012 at 6:04 am

    You are awesome!! Thanks :D

  13. Lynda Reply January 19, 2012 at 9:35 pm

    Thank goodness I found this post, I am so not a techi and when i upgraded and this happened I started to panic. Thank you so much!

  14. Allison Phillips Reply January 25, 2012 at 8:35 pm

    Whew!! That worked! I shared your blog post with a few others on Facebook who were running into the same issue and also in the StudioPress Forum. Thanks!!

  15. Rich Reply January 26, 2012 at 1:15 am

    Thank you so much for solving the Pop Up problem within minutes!! Aweomsesomsomeome!!

  16. Freddy Rodriguez Reply January 31, 2012 at 7:20 pm

    Thanks a bunch man! Saved me a huge headache.

  17. Fernando Souza Reply February 4, 2012 at 7:37 pm

    Hello John
    Your solution also fixes my Login-Lock plugin error.
    Thank you very much
    fernando

  18. emil Reply February 13, 2012 at 2:36 pm

    Thanks for your help in my case it was
    login-lock plugin

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