Unable to autorise twitter on autoposting

Hello There,

I have followed the method to create an twitter application and obtain consumer key and secret.

But once i click on
"Twitter access
You will need to sign in with your Twitter account first and grant the application access. Click on the button below to sign in with your Twitter account. Sign in with twitter"

I get the following error message,
Invalid request token received from twitter

Could you please help ?

Vinod