I can fix it,

What you can do is hit delete and when it brings you to the error screen, hit reload like 10 to 20 times fast. Then it's going to bring you to a screen (from AO) saying something about the webmaster, then X out and go back and check your post number (on main screen). If that doesn't work retry 'till it does. Always works for me .

But please note check you post number before you try to delete.
Cya