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WordPress 3.0 Problems And Their Solutions


WordPress 3.0Earlier we saw the fix for WordPress Error – Headers Already Sent Warning Problem and also WP Super Cache Content Encoding Error. Now we are going to discuss about the common problems and solutions in the much awaited WordPress release, WordPress 3.0, which released last week and reached maximum of downloads. WP 3.0 had several fixes and new features, but unfortunately some of the themes were not compatible with WordPress 3.0 and famous Thesis was one amongst them I believe.

#1 – Problem : Custom File Editor Issue in Thesis 1.7

Error :

Fatal error: Call to undefined function use_codepress() in /home/content/46/5420546/html/wp-content/themes/thesis_17/lib/admin/admin.php on line 42

Solution :

Just follow these steps and please don’t forget to keep a backup. Please!

  1. Connect to your webhost using FTP Client or CPanel File Manager. I recommend FTP Client, and preferably FileZilla.
  2. Go to the location mentioned in the error message

Example : wp-content/themes/thesis_17/lib/admin/

  1. Download admin.php to your system and open it using a file editor. I recommend NotePad++.
  • Now go to the line 42 (where the error is) and add two forward slashes before it and make that as a comment.

  • Example : //if (use_codepress()) add_action('admin_print_footer_scripts', 'codepress_footer_js');

    1. Now upload the updated admin.php to the wp-content/themes/thesis_17/lib/admin/ and that’s it!

    Now you can use the Custom File Editor without any issues, but you’ll unfortunately miss syntax highlighting feature. Hope the next version of Thesis will solve this problem!

    Source :

    #2 Problem – Stuck in Maintenance Mode after failed plugin upgrade

    Error : "Failed to create directory /public_html"

    Now the whole site even the /wp-admin just shows this message:

    “Briefly unavailable for scheduled maintenance. Check back in a minute.”

    Solution :

    Check this WordPress Forum Thread :

    #3 Problem – Fatal Error on Upgrade, Allowed memory size exhausted

    Error : Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 2356995 bytes) in /home1/tampamas/public_html/wp-includes/http.php on line 1331

    Solution :

    Check this WordPress Forum Thread :

    #4 Problem – Some Plugin Problems

    Plugin Names : Podcasting Plugin by TSG, HeadSpace2 and Event Calendar.

    Solution :

    Check this WordPress Forum Thread :

    #5 Problem – My Theme is not compatible with WordPress 3.0!

    Some Themes : Themes like Atahualpa, Comfy Magazine and so on are getting errors.

    Solution :

    Make your theme compatible with WP 3.0 :

    #6 Problem – WordPress 3.0 multi-site multi-domain problems.

    Problem 1 : I can’t load page URLs except when using ?p=xyz permalinks

    Problem 2 : The new themes I installed and activated on the main WP 3.0 site do not show up on separate domains

    Problem 3 : I cannot access Plugins on separate domains

    Problem 4 : New users are not visible on separate domains

    Solution :

    WordPress 3.0 multi-site multi-domain problems and solutions :

    #7 Problem – Adding images to the post

    Solution :

    Check this WP Support thread :

    #8 Problem – WP3.0 Media Uploader “Unable to create directory”

    Error :

    “test.jpg” has failed to upload due to an error
    Unable to create directory /usr/local/www/domainname/www/blog/wp-content/uploads/2010/06. Is its parent directory writable by the server?

    Reference :

    Check this WP Support thread :

    #9 Problem – After upgrade- Unwanted code at the top of my page

    Error :

    ", $count2 {$name2}s"; } } echo $output; } } $elixir = new Elixir(); ?>lixir(); ?> ", $count2 {$name2}s"; } } echo $output; } } $elixir = new Elixir(); ?>e(__FILE__).'/'); // Get everything else require_once(ABSPATH.'wp-settings.php'); ?>

    Solution :

    Check this WP Support thread :

    #10 Problem – 3.0 UPGRADE Fatal error: Call to a member function add_rewrite_tag() on a non-ob

    Error :

    Fatal error: Call to a member function add_rewrite_tag() on a non-object in /home/content/u/r/b/urbaneco/html/wp-includes/taxonomy.php on line 289

    Solution :

    Check this WP Support Thread :

    #11 Problem – Admin permission error after 3.0 upgrade

    Solution :

    Check this WP Support Thread :

    #12 Problem – Upgrade to WordPress 3.0 Shows Broken Backend And No CSS Front Page For New Site

    Solution :

    Check this WP Support Thread :

    #13 Problem – Cannot save posts in 3.0 – get error – Warning: Cannot modify header information

    Error :

    Warning: Cannot modify header information - headers already sent by (output started at /home/gototenn/public_html/wp-config.php:83) in /home/gototenn/public_html/wp-includes/pluggable.php on line 890

    Solution :

    Check this WP Support Thread :

    #14 Problem – WordPress 3.0 Multiblog Enabling Problem and Solution

    Solution :

    WordPress 3.0 Multiblog Enabling Solution :

    #15 Problem – WordPress upgrade overwrites my custom theme

    Solution :

    Check this WP Support Thread :

    #16 Problem – No wysiwig editor after upgrade to 3.0

    Solution :

    Check this WP Support Thread :

    #17 Problem – After update to WP3 my RSS link is not working

    Solution :

    Check this WP Support Thread :

    #18 Problem – Blank Page After 2.9.1 to 3.0 Upgrade

    Solution :

    Check this WP Support Thread :

    #19 Problem – Problem with single_cat_title after 3.0 upgrade

    Solution :

    Check this WP Support Thread :

    Did you encounter any one of these errors? Do you any other fix? Please share it in the comments!


    CEO and Founder of Slashsquare, Indian Blog Network and Web Consulting Media. HBB is a part of Slashsquare Network. I'm a Tech Blogger, Striving Entrepreneur, Atheist, and Proud Indian. Catch me on Facebook and Twitter.

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      • Ritu K

        I am having a blog with WordPress…but how to reduce the load time and other things

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      • Usman

        Thanks for highlighting these errors in wordpress 3.0

      • Umer

        Thanks for troubleshooting the wordpress 3.0 problems

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      • Salem

        i have Blank Page After fresh installation of WP 3.0.1 Thanks for Link

        And about Editing .PHP .html files etc Files in your server there is Small and powerful addons in NotePad++ Called NppFTP you can directly edit your file and save it(upload it) using Notepad++

      • neel

        Great list of all the solutions to the wordpress 3.0 problems. thanks for sharing

      • Luqman | Domain name registration

        Thanks for sharing this problem and the solution, I will not upgrade to the WordPress 3.0 till this is fix by WordPress on the coming version.

      • Suneel

        I have started a blog on wordpress 3.0. Trying to learn a few and share it to the world and thereby increasing viewership and page rank and lastly make some more money 🙂

        I wish you could be a part of it Pradeep.

        You can check it at

      • Anshuman Rawat


        Upgrading to WordPress 3.0 has made life really messy at our end. The following two are the most frequent error messages that I get:

        1. For some reason, “Excerpt View” is not processing correctly and creating “Premature end of script headers” errors.

        [Wed Jul 07 03:16:59 2010] [error]
        Script timed out before returning headers: admin-ajax.php,
        referer: url/wp-admin/edit.php?mode=excerpt

        2. Our pages are making an “inner join SQL” query – which did not exist earlier.

        The following has become REGULAR FEATURE now – thereby causing non-loading of site almost most of the day. The pages just keep on loading.

        3. error_log: Premature end of script headers: wp-cron.php
        error_log: timed out before returning headers: wp-cron.php

        I would be pleased if you could share your thoughts on any possible troubleshooting for the above.


        • S.Pradeep Kumar

          Bad to know about that mate. Here are some of my views..

          1. I think the error occurs whenever a script is stopped. You have to remove some plugins to fix this error.

          2. Am not really sure about this error mate. Will chk and reply back.

          3. To fix this, you need to do some stuffs.. I found a thread in HG Forums :

      • Models & Moguls

        Found answer to my own problem here:

      • himanshu

        my website appears to be shrunk in IE 8 and later. please help

        • S.Pradeep Kumar

          Screenshots will be great Himanshu. I can check where the problem is easily. 🙂

          To avoid such issues, most of the themes come with ie8.css file. You can report this to the theme author.

      • Bill Ortell

        Maybe we didn’t do something right, but two things are arie on our end as well when we opened [even] a new installation of wp3…

        when submitting ANYTHING with quotes in it… single/double… they’re submitted via the normal post wysiwyg [ or using html only ] editor and they return with the ‘s [backslashes] in them… and no only that… because of it… it’s not appearing properly in the posts/pages, etc…

        in addition – there are *MAJOR* issues with moving from visual html editor mode… it removes HREF/SRC urls entirely…

        i’m sure this is our fault,… or is it!? 🙂


      • Xpress Music

        wow !! so many errors , i ddnt face any but cant install easy adsense 🙁

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      • Ajith Edassery@Make money online

        Thanks for this checklist man. However, I do not intend to move to WP 3.0 anytime soon. But I would bookmark this and comeback.

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      • JournalXtra

        101 Incredibly Good WordPress Plugins…

        I found your entry interesting do I’ve added a Trackback to it on my weblog :)…

      • Tech Sputter

        OMG how did you get all these info from, its really nice that you shared this content to all of us because i had some problems initially in worpress 3.0 and now i got it cleared, thanks a lot for your content

      • john tanedo

        RSS seems to be disoriented. . . any ideas?

        look at it on my website please

      • Ram kumar

        i think the next version will clear all the problems.Its better to not to go for 3.0

      • Max

        Thanks for all the info and detailed workaround for Thesis and WP 3.0. It is VERY helpful to all of us who are a bit challenged when it comes to coding, php and so on.

        Thesis is great, but I wish it was better equipped with push button customisation options rather than having to code certain things.

        It’s site like yours that make my day and take the headache away.

        Great post, thanks again


      • jens

        wow very awesome tips

        I have some problem with wp 3.0 about theme not load perfectly

      • Vinni

        looks alike another patch is coming, i had the same issues. and so many more.

      • Aminul Islam Sajib

        Don’t have to worry about others but the maintenance mode one. Thanks for letting us know about it.

      • Shiva | Web Magazine

        I hope so the WordPress team comes up with a fix for all this bugs and come up with refined 3.1 soon

      • Akash Malik

        Great post buddy, newbies are usually afraid to upgrade the blog because of several issues, it is good to see that you already found the solutions for them 😉


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