Hi all, I am using Jboss 5 and have deployed few ear files. The irony here is that the same build was not throwing this error in JBoss4.0.5. the error i get in Jboss 5 is 00:50:25,535 ERROR [Helper] getClickUrl() Ex: javax.naming.CommunicationException [Root exception is java.io.InvalidClassException: org.jboss.ejb3.remoting.IsLocalInterceptor; local class incompatible: stream classdesc serialVersionUID = -3758782076801249473, local class serialVersionUID = 337700910587744646] | javax.naming.CommunicationException [Root exception is java.io.InvalidClassException: org.jboss.ejb3.remoting.IsLocalInterceptor; local class incompatible: stream classdesc serialVersionUID = -3758782076801249473, local class serialVersionUID = 337700910587744646] | at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:725) | at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:590) | at javax.naming.InitialContext.lookup(InitialContext.java:351) | at net.tss.app.utils.Utility.getProductLookupBean(Utility.java:1688) Any idea why ? And how do i fix this ? Some googling took me to some pages where i found that it was an issue in Jboss 4 which was then fixed. Thanks Venu View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4203867#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...