Getting error incase of incorrect security answer in Password Recovery process

Hi ,
I am getting an error incase user submits incorect security question's answer. I gave text in 'QuestionFailureText'. But its not working.
Below is the error getting.
'
Security Exception Description: The application attempted to perform an operation not allowed by the security policy.  To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.

Exception Details: System.Security.SecurityException: The source was not found, but some or all event logs could not be searched.  Inaccessible logs: Security.

Source Error:


[No relevant source lines]
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