migrating from 3.2.3 to 4.0.2

[xps2nini2000]

Hiiiiii All
Recently i hav shifted to jboss4.0.2 .I m using windows vista + jdk 1.5.
My application was working fine on jboss 3.2.3 .But when i try to run it on jboss 4.0.2 .it gives classcastexception.I hav set callbyvalue property true in conf file.Now i m getting same exception in different part of code .Can anybdy help me

[xps2nini2000]

Hi All
Its again me.Pls Help me .The same code is working fine on other m/c but on my m/c which is having the same setup as the previus one Its giving exception illegal state execption.detail of exception Are:

04:27:58,018 INFO [STDOUT] ******************Error found in TranslateDirect....
..........java******************with Logina error java.sql.SQLException: Connect
ion handle has been closed and is unusable
04:27:58,018 INFO [STDOUT] Exception in TranslateDirect.javajava.sql.SQLExcepti
on: Connection handle has been closed and is unusable
04:27:58,018 INFO [STDOUT] Going to Translate.jsp from TranslateDirectServlets
04:27:58,018 ERROR [[TranslateDirect]] Servlet.service() for servlet TranslateDi
rect threw exception
java.lang.IllegalStateException
at org.apache.catalina.connector.ResponseFacade.sendRedirect(ResponseFac
ade.java:423)
at TranslateDirect.doPost(TranslateDirect.java:1519)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)