Error by adding security provider

Dear all,

I have encountered the following problem:

We are authenticating a client with a server.
The client uses jdk 1.3.
The server uses jdk 1.4

On the server side, we have a class named Crypto.class with following
call to the security provider Bouncy Castle:

..
Debug.printDebugMessage("com.tpg.util.Crypto", "dynamic provider
registration");
java.security.Security.addProvider(new
org.bouncycastle.jce.provider.BouncyCastleProvider());
Debug.printDebugMessage("com.tpg.util.Crypto", "provider registered");
..

The server code got stuck on the call of addProvider with the
following messages:

[27/Sep/2004:17:28:51] INFO (22840): CORE3282: stdout: Mon Sep 27
17:28:14 GMT+01:00 2004 [com.tpg.util.Crypto] dynamic provider
registration
[27/Sep/2004:17:28:51] SEVERE (22840):
NRU-com.tpg.backoffice.service.cmm.ejb.FPMTxnEJBBean: Cannot load from
BACKUPSTORE FOR Key: <40b8e5d31>
[27/Sep/2004:17:28:51] WARNING (22840):
[NRU-com.tpg.backoffice.service.cmm.ejb.FPMTxnEJBBean.1]: Invalid
sessionID: 40b8e5d31
[27/Sep/2004:17:28:51] SEVERE (22840): EJB5017: Exception while
running preinvoke : ejbName = [FPMTxnEJB]
[27/Sep/2004:17:28:51] SEVERE (22840):
javax.ejb.NoSuchObjectLocalException: The EJB does not exist.
at com.sun.ejb.containers.StatefulSessionContainer.getContext(StatefulSessio
nContainer.java:756)
at com.sun.ejb.containers.BaseContainer.preInvoke(BaseContainer.java:495)
at com.sun.ejb.containers.StatefulSessionContainer.removeBean(StatefulSessio
nContainer.java:407)
at com.sun.ejb.containers.EJBObjectImpl.remove(EJBObjectImpl.java:159)
at com.tpg.backoffice.service.cmm.ejb._IFPMTxnEJB_Stub.remove(_IFPMTxnEJB_St
ub.java:430)
at com.tpg.backoffice.service.generic.servlet.CommandProxyServlet.destroySes
sion(CommandProxyServlet.java:180)
at com.tpg.backoffice.service.generic.servlet.CommandProxyServlet.doPost(Com
mandProxyServlet.java:334)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at com.tpg.backoffice.service.generic.servlet.CommandProxyServlet.service(Co
mmandProxyServlet.java:215)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.StandardWrapperValve.invokeServletService(Standa
rdWrapperValve.java:720)
at org.apache.catalina.core.StandardWrapperValve.access$000(StandardWrapperV
alve.java:118)
at org.apache.catalina.core.StandardWrapperValve$1.run(StandardWrapperValve.
java:278)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve
.java:274)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:50
5)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve
.java:212)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:50
5)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:
203)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:50
5)
at com.iplanet.ias.web.connector.nsapi.NSAPIProcessor.process(NSAPIProcessor
.java:158)
at com.iplanet.ias.web.WebContainer.service(WebContainer.java:850)

I have tried several ways:
1. using the new jce (downloaded from Bouncy Castle) for jdk 1.4 by
adding it in the <JAVA_HOME>jre/lib/ext, or by adding it in de lib to
be packed with the ejb's
2. comment out the addProvider, and add an entry in the java.security
file for Bouncy Castle (the static way)

But still receive the above error messages.

So, if any one has seen such problem before, please help !

Michael