asterisk users - Nov 2006 - asterisk and MISDN on a core2 Duo x64 system

Hi all
i try to run misdn with asterisk on an Fedora Core 6 x64 System
but after a installation of all the driver for MISDN with no errors.
I get the following errors in the Full log from Asterisk

logger.c: [app_exec.so]Nov 21 20:50:25 VERBOSE[21401] logger.c:
[app_exec.so] => (Executes applications)
Nov 21 20:50:25 VERBOSE[21401] logger.c: == Registered application
'Exec'
Nov 21 20:50:25 VERBOSE[21401] logger.c: [app_readfile.so]Nov 21
20:50:25 VERBOSE[21401] logger.c: [app_readfile.so] => (Stores output of
file into a variable)
Nov 21 20:50:25 VERBOSE[21401] logger.c: == Registered application
'ReadFile'
Nov 21 20:50:25 VERBOSE[21401] logger.c: [libisdnnet.so]Nov 21 20:50:25
WARNING[21401] loader.c: /usr/lib64/asterisk/modules/libisdnnet.so:
undefined symbol: strL2State
Nov 21 20:50:25 WARNING[21401] loader.c: Loading module libisdnnet.so
failed!

maybe I?m on the wrong way ?
How can I fix this problem ?

Bye
MArkus