If you’re using the Simple Tags plugin, you might be holding off on upgrading to WordPress 2.9.1 because this plugin is only Compatible up to: 2.8.

Well, turns out the plugin does actually seem to work with WP 2.9.x — but you have to make a quick edit to the plugin file itself. Now, normally i’m not a fan of hacking plugin files to get things working because your changes would be lost with each new release. But, in this case, i figured that when the author does decide to release an update, i would be ok with losing these changes because they would no longer be necessary anyway.

Note: if you’re not comfortable editing plugin files directly (although this edit is really easy), then maybe you should wait until the author releases an official update. Otherwise, i’ve included the bit of code here for reference.

To get Simple Tags working with WP 2.9+

1) Open simple-tags.php and find the line:

if ( strpos($wp_version, '2.7') !== false || strpos($wp_version, '2.8') !== false ) {

2) Change that to:

if ( strpos($wp_version, '2.7') !== false || strpos($wp_version, '2.8') !== false || strpos($wp_version, '2.9') !== false ) {

That’s right, it’s just a matter of adding the additional condition which allows WP version 2.9 to work.

As always, be sure to backup and test this fix on your own site before going live.

This fix was found / documented here:
- http://www.wordpress-fr.net/support/viewtopic.php?pid=173448#p173448
- http://www.herewithme.fr/simple-tags-et-wordpress-2-8#comment-34072