Fatal error: Call to a member function add_rewrite_tag() on a non-object in C:\ibi\www\wp-includes\taxonomy.php on line 289
Each time I logged into my wp site, It says upgrade to 3.0.
I did the same and siting with the above line.
I know that many of the users have the same issue. For searching solution, why the wp team keep this error open for all?????????