How to get API code for wordpress.org?

In order to activate the Dunstan-style Error Page plugin, I needed the API code.

Now I tried looking for API code in my admin page under Profile page but I did not get anything.

SO I went back to my wordpress.com blog not wordpress.org. If I did not have the blog in wordpress.com, I would have to create a blog only for the sake of the API code. How strange?

So I login to my wordpress.com blog.

There in the top left hand corner I found     My Account >>Profile >> API code

I copied that API code and again went to the admin page of my wordpress.org blog.

There in Settings >>> Error Page >>> Enter the API code

Now my Dunstan-style Error Page is working.

But somehow its working only for 3 blogs!

Why on earth its not working for the 4th blog .

Ok I Found the culprit!!!!!!!!

Dunstan Error 404 works only with Permalinks setting  with “Index” i.e.    /index.php/%year%/%postname%/

No other permalinks setting will work for Dunstan 404 error page!