WordPress 3.0 Cannot Export

WordPress 3.0 is finally released with some great new features.

I just upgraded my site to 3.0 today. The upgrade was smooth, however, I find that export doesn’t work any more. When I try to push export button to download posts xml file locally, I get following error.

Warning: Illegal offset type in isset or empty in /home/content/22/5401722/html/wp-includes/taxonomy.php on line 176
Warning: Cannot modify header information – headers already sent by (output started at /home/content/22/5401722/html/wp-includes/taxonomy.php:176) in /home/content/22/5401722/html/wp-admin/includes/export.php on line44
Warning: Cannot modify header information – headers already sent by (output started at /home/content/22/5401722/html/wp-includes/taxonomy.php:176) in /home/content/22/5401722/html/wp-admin/includes/export.php on line45
Warning: Cannot modify header information – headers already sent by (output started at /home/content/22/5401722/html/wp-includes/taxonomy.php:176) in /home/content/22/5401722/html/wp-admin/includes/export.php on line46

WordPress FAQ suggests checking spaces in wp-config.php and remove blank spaces before <?php tag or after ?> tag, I try and it does not help.

After trying deactivate on every single plug-in, I figure out it’s the plug-in Simple Tags that breaks WordPress 3.0 new export feature. Before Simple Tags owner releasing a fix, you can temp workaround this issue by deactivating Simple Tags plugin. After that, you will be able to get exported xml file to save.

6 thoughts on “WordPress 3.0 Cannot Export”

  1. hi Emma, i have the very same problem, however, even after i deactivated the Simple Tags, i still can’t not perform the export. Moreover, I got the following error when I tried to uninstall the plug-in. Any thoughts would be much appreciated.

    Warning: Cannot modify header information – headers already sent by (output started at /home/jslxyy/public_html/johnuke.com/wp-config.php:1) in /home/jslxyy/public_html/johnuke.com/wp-includes/pluggable.php on line 890

  2. Hi,
    I’m facing the problem with Wp 3.0. Even after deactivating all my plugins, I now see NO error, but instead I see only the “Start date, end date, categories and Authors” options, but there is NO “Download File” option. Any suggestions Emma? 🙁

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