The filter daemon did not respond within the timeout limit

Hi,

After performing full crawl,i got the below error message

The filter daemon did not respond within the timeout limit.

I tried make the changes as per the below link 

http://social.technet.microsoft.com/Forums/en-US/sharepointadminprevious/thread/e63ab930-a5d0-4634-a239-d18feba80c9c/

But i couldn't find the <maxReceivedMessageSize >  tag in machine.config default which is available in below path 

C:\Windows\Microsoft.NET\Framework64\v2.0.50727\CONFIG

I couldn't find MaxDownloadSize  folder/file in the below path

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office Server\14.0\Search\Global\Gathering Manager

I am trying to do this in App1 server of our farm.

Please correct me if i am wrong.

Regards,

Sudheer

Thanks & Regards, Sudheer