Custom Voicemail Greetings won't play (SLIN vs WAV)

I’ve set up FreePBX 2.11.0.0beta2.8 (Asterisk 11.1.2) with voicemail for an extension. I recorded custom unavailable and busy greetings via the extension but when I call I get the default Asterisk VM greeting.

Here’s the voicemail folder listing for the extension showing the wav files recorded at the correct time:

[email protected]:/# ls -la /var/spool/asterisk/voicemail/default/1
total 32
drwxrwx— 6 asterisk asterisk 4096 Apr 20 17:44 .
drwxrwxr-x 4 asterisk asterisk 4096 Mar 30 15:29 …
-rw-rw---- 1 asterisk asterisk 3244 Apr 20 17:44 busy.wav
drwxrwx— 2 asterisk asterisk 4096 Apr 20 17:44 INBOX
drwxrwx— 2 asterisk asterisk 4096 Apr 20 17:43 Old
drwxrwx— 2 asterisk asterisk 4096 Apr 20 17:43 tmp
-rw-rw---- 1 asterisk asterisk 3244 Apr 20 17:44 unavail.wav
drwxrwx— 2 asterisk asterisk 4096 Apr 20 17:43 Urgent

And here’s a snippet from the log file showing a call going to voicemail for this extension:

[2013-04-20 17:45:03] VERBOSE[19806][C-00000013] pbx.c: – Executing [[email protected]:3] VoiceMail(“SIP/1-0000001f”, “[email protected],b”"") in new stack
[2013-04-20 17:45:04] VERBOSE[19806][C-00000013] file.c: – <SIP/1-0000001f> Playing ‘/var/spool/asterisk/voicemail/default/1/busy.slin’ (language ‘en’)
[2013-04-20 17:45:04] VERBOSE[19806][C-00000013] file.c: – <SIP/1-0000001f> Playing ‘vm-intro.ulaw’ (language ‘en’)

As far as I can tell it’s trying to play a busy.slin file which does not exist since my greetings are recorded as wav files.

I can’t find a setting to tell it to use my wav files rather than non-existent slin files.

Can anybody give me any suggestions? Many thanks.

did you use the phone or did you upload something?

I dialed voicemail from the phone extension and recorded busy and unavailable messages. The wav timestamps match the time I did that.