Java client tomcat

Hi all,

I have a WO 5.2.4 app running on Tomcat 5.5.
This serves web pages and a Java Client (pure Swing no nib)

The java client works perfectly on my development Windows machine (direct or Tomcat) but in deployment (Unix), I get the 
following exception when  invoking a remode method on session :

com.webobjects.foundation.NSForwardException for java.io.IOException: The response from the server was invalid (there 
may have been an exception):  Apache Tomcat/5.5.9 - Error report HTTP Status 404 - 
/Mara2/WebObjects/Mara2.woa/wo/rtruPdCrowKuVWURkbSlt0/0.0.0.1.0type Status reportmessage 
/Mara2/WebObjects/Mara2.woa/wo/rtruPdCrowKuVWURkbSlt0/0.0.0.1.0description The requested resource 
(/Mara2/WebObjects/Mara2.woa/wo/rtruPdCrowKuVWURkbSlt0/0.0.0.1.0) is not available.Apache Tomcat/5.5.9
 at com.webobjects.eodistribution.client.EOHTTPChannel._skipHeadersInResponse(EOHTTPChannel.java:871)
 at com.webobjects.eodistribution.client.EOHTTPChannel._responseToMessage(EOHTTPChannel.java:531)
 at com.webobjects.eodistribution.client.EOHTTPChannel.responseToMessage(EOHTTPChannel.java:603)
 at com.webobjects.eodistribution.client.EODistributedObjectStore._send(EODistributedObjectStore.java:594)
 at com.webobjects.eodistribution.client.EODistributedObjectStore._send(EODistributedObjectStore.java:623)
 at 
com.webobjects.eodistribution.client.EODistributedObjectStore.invokeRemoteMethodWithKeyPath(EODistributedObjectStore.java:1045)
 at mara2.gui.app.LookUpData.login(LookUpData.java:132)

On the Unix deployment machine, the session is created but the remote method is never invoked. I didnot see any 
exception.

Thanks in advance for any idea.

Pierre