After updating my themes - site to WordPress 2.9 the plugin 'Simple Tags' says on top of the dashboard:
Simple Tags can't work with this WordPress version !
The plugin is still working though and you just need to edit the file simple-tags.php on line 35.
Here you find:
if ( strpos($wp_version, '2.7') !== false || strpos($wp_version, '2.8') !== false ) {this needs to be changed to:
if ( strpos($wp_version, '2.7') !== false || strpos($wp_version, '2.8') !== false || strpos($wp_version, '2.9') !== false ) {After adding $wp_version, '2.9' the plugin Simple Tags works imho as before.