[Asterisk-Users] can't run app_txfax

[Roman]

Anyone run app_txfax and app_rxfax successfully on asterisk 1.2 beta1?
I get an error when trying to run asterisk:

[app_txfax.so]Oct  5 12:05:24 WARNING[14665]: loader.c:314 
__load_resource: /usr/lib/asterisk/modules/app_txfax.so: undefined symbol: 
fax_set_header_info
Oct  5 12:05:24 WARNING[14665]: loader.c:543 load_modules: Loading module 
app_txfax.so failed!
Ouch ... error while writing audio data: : Broken pipe

What could be the problem?