Hi lijinsjoseph,
Are you only experiencing the 404’s on the post/page-editing screens?
If you’re getting 404 errors while in the Dashboard, it’s possible something has gone wonky with your wp-admin files. I’d suggest downloading a fresh copy of WordPress (assuming you’re on the latest version of WordPress, 3.4.2) and re-uploading the wp-admin folder.
I am in 3.2 version.. I am getting error only on post/page-editing screens.
No error on dashboard
I am in 3.2 version.
I’d still recommend downloading a fresh copy of the wp-admin folder. You can find your version on this page to download. Just a friendly reminder, by the way, that you should really be running the latest version whenever possible. It’s the easiest way to make sure your site stays secure 🙂
I will try and will let you know.. Thanks for your support…