ATM with kernel 2.4.x

Hello, we're trying to make a ForeRunnerLE 155 card work and we face several problems:
-with kernel 2.4.3, we get unresolved symbol as we insmod lec -with kernel 2.4.0-2.4.2 the sytem hangs when we try to start the atm softs (ilmid)

So it only works with kernel <= 2.4.0-test12. We're using atm-0.78.

Does anyone know the status of atm under 2.4.x ?

Thank you for your help.

Stef