[Freeswitch-users] can't add $us-ring at end of ringback string? FS Aborts

[Mario G]

I want a custom ringback play 2 files then normal ringing. With ${us-ring} added it does not work and FS aborts. Without ${us-ring} the files play but no ring afterwards. I tried ${us-ring}, tone_stream://${us-ring}, local_stream:${us-ring}, etc.
Thanks,
Mario G

<action application="set" data="ringback=file_string://${mvsounds}hi-long.wav!//${sayname}!tone_stream://${us-ring}"/>

Freeswitch Aborts:
2010-11-11 12:26:08.413942 [DEBUG] switch_core_file.c:176 File ///usr/local/freeswitch/conf/mvsounds/mario.wav sample rate 16000 doesn't match requested rate 8000
Assertion failed: (fh->file_interface != ((void *)0)), function switch_core_file_read, file src/switch_core_file.c, line 210.
Abort trap (core dumped)
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