[jboss-user] [JBoss jBPM] - Examples Error

[ruds]

Hello there,
I am new to JBPM and i was trying to run the examples found on the following tutorital 
http://wiki.jboss.org/wiki/Wiki.jsp?page=JbpmGettingStarted

I am using the following JVM version:
java version "1.4.2_09"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_09-b05)
Java HotSpot(TM) Client VM (build 1.4.2_09-b05, mixed mode)

i am getting this error when i try to examine a task while logging as a manager, the task screen is looking different then the examples and the following error is thrown on the console: (is it a java version issue?)
ERROR [STDERR] java.lang.UnsupportedClassVersionError: org/jbpm/websale/RemindActor (Unsupported major.minor version 49.0)
ERROR [STDERR]     at java.lang.ClassLoader.defineClass0(Native Method)
ERROR [STDERR]     at java.lang.ClassLoader.defineClass(Unknown Source)
ERROR [STDERR]     at java.lang.ClassLoader.defineClass(Unknown Source)
ERROR [STDERR]     at org.jbpm.instantiation.ProcessClassLoader.findClass(ProcessClassLoader.java:111)
ERROR [STDERR]     at java.lang.ClassLoader.loadClass(Unknown Source)
ERROR [STDERR]     at java.lang.ClassLoader.loadClass(Unknown Source)
ERROR [STDERR]     at org.jbpm.instantiation.Delegation.instantiate(Delegation.java:140)
ERROR [STDERR]     at org.jbpm.instantiation.Delegation.getInstance(Delegation.java:125)
ERROR [STDERR]     at org.jbpm.instantiation.Delegation$$FastClassByCGLIB$$6bae1598.invoke()
ERROR [STDERR]     at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
ERROR [STDERR]     at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:163)
ERROR [STDERR]     at org.jbpm.instantiation.Delegation$$EnhancerByCGLIB$$7e8a5893.getInstance()
ERROR [STDERR]     at org.jbpm.graph.def.Action.execute(Action.java:121)
ERROR [STDERR]     at org.jbpm.graph.def.Action$$FastClassByCGLIB$$7876e90e.invoke()
ERROR [STDERR]     at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
ERROR [STDERR]     at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:163)
ERROR [STDERR]     at org.jbpm.graph.def.Action$$EnhancerByCGLIB$$f9f19c95.execute()
ERROR [STDERR]     at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:264)
ERROR [STDERR]     at org.jbpm.graph.def.GraphElement$$FastClassByCGLIB$$7a7d6aa6.invoke()
ERROR [STDERR]     at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
ERROR [STDERR]     at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:163)
ERROR [STDERR]     at org.jbpm.taskmgmt.def.Task$$EnhancerByCGLIB$$aa50bc10.executeAction()
ERROR [STDERR]     at org.jbpm.job.Timer.execute(Timer.java:56)
ERROR [STDERR]     at org.jbpm.job.Job$$FastClassByCGLIB$$12cb08fd.invoke()
ERROR [STDERR]     at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
ERROR [STDERR]     at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:163)
ERROR [STDERR]     at org.jbpm.job.Job$$EnhancerByCGLIB$$703fabf2.execute()
ERROR [STDERR]     at org.jbpm.job.executor.JobExecutorThread.executeJob(JobExecutorThread.java:164)
ERROR [STDERR]     at org.jbpm.job.executor.JobExecutorThread.run(JobExecutorThread.java:64)
INFO  [JobExecutorThread] JbpmJobExector:192.168.0.183:1 leaves cyberspace

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