TMImple looks to be OK - it implements javax.transaction.TransactionManager:
You might have some CL conflict.
Hmmmm i see, this implements javax.transaction.TransactionManager, but the error persist in jboss 4.0.2, 4.2.0 and 5 beta. i not found nothing solution...
thx 4 your response
Do you have jta.jar in your app?