Exception Notifier help

Hi,

I am not able to get this working. I did everything that was given in
readme:

1. Included exception notifiable in App controller - include
ExceptionNotifiable
2. Addded receiving email IDs in environment.rb -
ExceptionNotifier.exception_recipients = %w(sgudibanda@gmail.com )
3. Added local address clear in App controller. --
local_addresses.clear
4. Mailing infrastructure is ready too - I am already using this for
Auth notification

Now when i tried to test it, by introducing errors myself, unknown
action, it doesn't send me any mail. Am i being something very basic
here?

Regards,
Sandeep G