UPDATE:Please see Part II, which includes links to the official WordPress support forum.
After trying everything from disabling plugins, to re-creating permalinks, to removing my .htaccess file, I still could not restore my permalink custom structure after upgrading WordPress from version 2.5.1 to 2.6. I then posted a new topic in the forums for help and continued to search for answers.
Finally, using several posts and a hack of my own at the end, I came up with the following procedure which fixed it for me:
1. Upload this file to your wp-includes directory:
Save this link as “rewrite.php” and then upload it to your /wp-includes directory.
2. From the dashboard, set permalinks to “Default” and Save it.
3. From the dashboard, set permalinks to “Custom Structure” of your choice and Save it.
Mine is: /index.php/%year%/%monthnum%/%day%/%postname%/
4. The above fixed it, but I saw some errors at the top of each of my pages pointing to /wp-includes/plugin.php – so I added the following line of code which is a hack to suppress the errors:
error_reporting(0); Put this line at the top, just below the opening <?php tag.
That’s it. Please let me know if you have any problems by leaving a comment below.
