[jboss-user] JBoss version 3.0.5 Vs 4.2.3

Hi, I have an application which works on JBoss 3.0.5. But when I try to deploy the same application on JBoss 4.2.3 following warn/error occurs: 2009-09-28 10:09:27,817 WARN [org.jboss.system.ServiceController] Problem starting service jboss:service=invoker,type=http,target=Naming java.lang.NoSuchMethodError: org.jboss.util.Strings.replaceProperties(Ljava/lang/String;)Ljava/lang/String; 2009-09-28 10:09:27,801 WARN [org.jboss.system.ServiceController] Problem starting service jboss:service=invoker,type=httpHA java.lang.NoSuchMethodError: org.jboss.util.Strings.replaceProperties(Ljava/lang/String;)Ljava/lang/String; 2009-09-28 10:09:27,801 WARN [org.jboss.system.ServiceController] Problem starting service jboss:service=invoker,type=http java.lang.NoSuchMethodError: org.jboss.util.Strings.replaceProperties(Ljava/lang/String;)Ljava/lang/String; 2009-09-28 10:09:27,832 WARN [org.jboss.system.ServiceController] Problem starting service jboss:service=invoker,type=http,target=Naming,readonly=true java.lang.NoSuchMethodError: org.jboss.util.Strings.replaceProperties(Ljava/lang/String;)Ljava/lang/String; Hence I try to locate org.jboss.util.Strings.replaceProperties but couldn't find this method in the JBoss Server API. Does any one know how could I bypass this issue? Any help is much appreciated. Thanks, Pranav