"File not found" in admin area after upgrade from 3.5.1 to 3.5.2
|Reported by:||_doherty||Owned by:|
After upgrading Wordpress from 3.5.1 to 3.5.2, my blog's admin area became inaccessible.
Requests for any page inside wp-admin resulted in "File not found". In the server logs, I saw 'FastCGI sent in stderr: "Primary script unknown"'. Wordpress content pages were served normally.
Server configuration was not changed as part of this upgrade.
After reverting the upgrade, the admin area became accessible again. I repeated the upgrade, and it failed a second time.