Donncha: WordPress MU 2.8.3

WordPress MU is a multi user or multi blog version of WordPress that is used to run sites like WordPress.com.

WordPress MU 2.8.3 is a security and bugfix release based on the fixes in WordPress 2.8.3 but also contains many other changes.

It’s a required upgrade for security reasons but also fixes a number of annoying bugs, especially #1067 and #1076.

Unfortunately the automatic upgrader in MU 2.8.2 is broken but it’s simple to fix:

• Before upgrading, edit wp-admin/includes/class-wp-upgrader.php and look for line 697.
  

  if ( !$wp_filesystem->copy($working_dir . ‘/wordpress/wp-admin/includes/update-core.php’, $wp_dir . ‘wp-admin/includes/update-core.php’, true) ) {

• See the “/wordpress/wp-admin/includes” bit? Change that to “/wordpress-mu/wp-admin/includes”:
  

  if ( !$wp_filesystem->copy($working_dir . ‘/wordpress-mu/wp-admin/includes/update-core.php’, $wp_dir . ‘wp-admin/includes/update-core.php’, true) ) {

• Save the file and auto upgrade. I upgraded this afternoon without a hitch after making that change. It’s fixed in 2.8.3 so it’s the last time you’ll have to do it.

Do not copy and paste the line above as WordPress will have changed the quotes to “smart quotes”. Actually go in and type “-mu” after “wordpress”. No copy and pasting please!

If auto upgrading still doesn’t work, don’t sweat it. Download the new release from the download page and upgrade manually, overwriting your current install with the new files.

Related Posts

• WordPress MU 2.7
• WordPress MU 2.6.1
• WordPress MU 2.8.1