Authentication Problem

Hi , I have been using freeradius-server-2.1.10 . Dialupadmin is using for web based administration. It was working fine till yesterday. I have changed added attribute to check Max-All-Session. Then I have face problem of No authenticate method (Auth-Type) found for the request: Rejecting the user however the authorized section is working fine. After googling i have check with option default Auth-Type = Local but it was not success. this error occurs for new create user only , old user are authenticating normally. I have revert back my changes with removing attribute to check Max-All-Session but still the error exists. Please advise me. Regards, John