asterisk users - Jan 2014 - Asterisk CallCompletion issue (NO_CORE_INSTANCE)

Hello All,

I have some problem on asterisk call completion feature, Every time I want to
execute the application(By pressing 6) , I got the following error:
"NO_CORE_INSTANCE"
So, I was in shocked sometimes without making any changes on the dialplan coed
problem solved.
But in most of the time the problem kept persisting.

Now I need some helps to solved the problem permananely?
Thanks for your help.
?exten =>? 6,1,CallCompletionRequest()
exten =>? 6,n,playback(beep)
exten =>? 6,n,verbose(${CC_REQUEST_RESULT})
exten =>? 6,n,goto(${CC_REQUEST_RESULT},1)

exten =>? SUCCESS,1,verbose(${CC_REQUEST_RESULT})
exten =>? FAIL,1,verbose(${CC_REQUEST_REASON})same =>?? n,hangup()

exten =>? 7,1,CallCompletionCancel()
exten =>? 7,n,playback(beep)
exten =>? 7,n,hangup()



Regard 
Sami
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