Problem recording in 1.6.0.1

Hello.

I’m trying to record a message with the Record() application:

[record]
exten => 900,1,Answer()
exten => 900,n,Wait(3)
exten => 900,n,Record(/tmp/greet:sln)
exten => 900,n,Hangup()

when the extension is dialed the call gets through and I get the beep to record a message but, when I hangup the message is not saved.

This was tested with asterisk 1.4 and it worked well but, now I upgraded to 1.6.0.1 and it doesn’t work.

How can I fix this in 1.6?

Thanks in advanced.