JDeveloper problem deploying J2EE application

Our developer team is attempting to deploy an application to a UNIX AIX Oracle 10G Application Server. They have used jdeveloper in the past without problems. The application needs to be deployed for testing.
I can recreate the problem they are having by doing the following:

Go into jdeveloper and click on new connection

TYPE
        Oracle Application Server
AUTHENTICATION
        ias_admin
        *******
CONNECTION
        Enterprise Manager OC4J Hostname:         oracle01.courts.state.md.us
        Enterprise Manager OC4J HTTP Port:        1810
        Remote Servers home directory:         /oramp01/app/oracle/product/devmid01
        OC4J Instance Name(optional):                JIS_ecitation_dev
EJB Client Connection
        ormi://oracle01:                                12401 ( I got this port number from grep on devmid01 and rmi and citation default is listed as 23791 ( via emc that is what i see, but ps commenad shows 12401)
        RMI username:                                admin
        RMI password:                                ?????

I attempted to do a search on the user name admin, but did not see a user name for this user...( so i am not sure which password to use, but I have tried some combinations)

Please let me know if you see any thing wrong with any of these parameters. I have looked at log files, changed settings etc etc, and do not seem to be able to get a  connection. I did see that ecitation deployed an application on 3-02-2007. This was before daylight savings time. Any help will be appreciated. I have recreated problem within jdeveloper on two different versions.

Currently get this error message:
Command was successfully sent to Oc4jDcmServlet
Receiving session id from servlet to check command status
****  Could not get session id from Oc4jDcmServlet
 ** Thread[main,5,main] ** Wed Mar 28 07:27:03 EST 2007 **  ** EXCEPTION: java.io.StreamCorruptedException: invalid stream header
java.io.StreamCorruptedException: invalid stream header
        at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:753)
        at java.io.ObjectInputStream.<init>(ObjectInputStream.java:268)
        at oracle.j2ee.tools.remote_deploy.Oc4jDcmClient.receiveSessionId(Unknown Source)
        at oracle.j2ee.tools.remote_deploy.Oc4jDcmCommand.execute(Unknown Source)
        at oracle.j2ee.tools.remote_deploy.Oc4jDcmCommand.listApplications(Unknown Source)
        at oracle.j2ee.tools.remote_deploy.Oc4jDcmMain.main(Oc4jDcmMain.java:71)
Please, wait for command to finish...
Checking command status...
Setting userName to sysman
Command has finished
Receiving command exit value
####  Could not receive command output from Oc4jDcmServlet
Receiving command output
####  Could not receive command output from Oc4jDcmServlet
****  No output was received from command
Closing connection to Oc4jDcmServlet
####  DCM command did not complete successfully (-1)
####  HTTP return code was -1