Error on upgrading WP from 2.7.1 to 2.8

0Mandar Oak • 22nd Jun 2009 • Programming, Wordpress, Miscellaneous, bookmarks • Bugs, Error, New Installation, WP 2.8

I upgraded my WP installation with latest WP release (2.8). After auto upgrading this I was getting error when Admin area is accessed, Error was looking something like Call to a member function read() on a non-object in html/wp-includes/theme.php on line 387. I tried installing it manually with overwriting all files in installation folder, but that didnt helped me.

Anyone has solution ??