Empty Options in Select Template list

I am using ANR.
I created two template nodes
-- 1 for Poll
-- 2 for Webform

When i go to create Auto Create Node Reference field, in the global settings section, here is a select box "Select template". This select list is showing 4 options.

I hacked the code and come to know that $options array is as follows:

Array
(
    [2] => Example AC_TEMPLATE
    [7] => Test AC_TEMPLATE
    [E] => 
    [T] => 
)