WARNING[1724]: config.c:920 find_engine:

Can anyone help me with this error message. I have asterisk 1.2 and have successfully installed astbill. All works fine except this realtime mysql which fails. I couldn’t find any posts related to this.

Connected to Asterisk 1.2.0-rc1 currently running on speed (pid = 1713)
Verbosity is at least 3
Asterisk Ready.
– Remote UNIX connection

Nov 24 21:34:00 WARNING[1724]: config.c:920 find_engine: Realtime mapping for ‘sippeers’ found to engine ‘mysql’, but the engine is not available

Nov 24 21:34:00 NOTICE[1724]: chan_sip.c:10793 handle_request_register: Registration from ‘ivan sip:71422@’ failed for ‘’ - Username/auth name mismatch