Voicemail - Advanced options missing

I’m not sure when it happened (I recently upgraded from FreePBX 2.1 to 2.3.1 and then, more recently, from asterisk 1.2.17 to 1.4.15), but I can no longer get the Advanced options in Voicemail - As soon as I press 3, the server responds with “press star to return to the main menu”. I’m not sure where to start looking for the solution, I have tried changing the language from UK to the default in the sip_general_additional.conf file, but even with the default sounds I still get the same error.

Had I listened to the complete set of voicemail prompts, I would have realised that the advanced options that I require are obtained by keying 0 (to change voicemail messages etc.). Option 3 only works when listening to a voicemail recording.