See attached process definition and error log. The relevant stack trace is:
org.jbpm.JbpmException: couldn't get value for file 'classes/java/lang/bsh.class'
at org.jbpm.file.def.FileDefinition.getBytes(FileDefinition.java:196)
at org.jbpm.instantiation.ProcessClassLoader.findClass(ProcessClassLoader.java:137)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at bsh.classpath.ClassManagerImpl.plainClassForName(Unknown Source)
at bsh.classpath.ClassManagerImpl.classForName(Unknown Source)
at bsh.NameSpace.classForName(Unknown Source)
at bsh.NameSpace.getImportedClassImpl(Unknown Source)
at bsh.NameSpace.getClassImpl(Unknown Source)
at bsh.NameSpace.getClass(Unknown Source)
at bsh.Name.consumeNextObjectField(Unknown Source)
at bsh.Name.toObject(Unknown Source)
at bsh.Name.toObject(Unknown Source)
at bsh.NameSpace.get(Unknown Source)
at bsh.Interpreter.get(Unknown Source)
at bsh.Interpreter.getu(Unknown Source)
at bsh.Interpreter.<init>(Unknown Source)
at bsh.Interpreter.<init>(Unknown Source)
at bsh.Interpreter.<init>(Unknown Source)
at org.jbpm.graph.action.Script.eval(Script.java:123)
at org.jbpm.graph.action.Script.eval(Script.java:73)
at org.jbpm.graph.action.Script.execute(Script.java:62)
at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:280)
at org.jbpm.graph.def.GraphElement.executeActions(GraphElement.java:237)
at org.jbpm.graph.def.GraphElement.fireAndPropagateEvent(GraphElement.java:207)
at org.jbpm.graph.def.GraphElement.fireEvent(GraphElement.java:190)
at org.jbpm.graph.def.Node.enter(Node.java:358)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173)
at org.jbpm.graph.def.Node_$$javassist_81.enter(Node$$_javassist_81.java)
at org.jbpm.graph.def.Transition.take(Transition.java:151)
at org.jbpm.graph.def.Node.leave(Node.java:453)
at org.jbpm.graph.node.StartState.leave(StartState.java:78)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173)
at org.jbpm.graph.def.Node_$$javassist_81.leave(Node$$_javassist_81.java)
at org.jbpm.graph.exe.Token.signal(Token.java:214)
at org.jbpm.graph.exe.Token.signal(Token.java:143)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173)
at org.jbpm.graph.exe.Token_$$javassist_14.signal(Token$$_javassist_14.java)
at org.jbpm.command.SignalCommand.execute(SignalCommand.java:97)
at org.jboss.soa.esb.services.jbpm.cmd.AsyncProcessSignal$AsyncSignalAction.execute(AsyncProcessSignal.java:304)
at org.jbpm.graph.def.Action.execute(Action.java:137)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173)
at org.jbpm.graph.def.Action_$$javassist_34.execute(Action$$_javassist_34.java)
at org.jbpm.graph.def.GraphElement.executeAction(GraphElement.java:280)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173)
at org.jbpm.graph.def.Node_$$javassist_81.executeAction(Node$$_javassist_81.java)
at org.jbpm.job.ExecuteActionJob.execute(ExecuteActionJob.java:33)
at org.jbpm.job.executor.JobExecutorThread.executeJob(JobExecutorThread.java:172)
at org.jbpm.job.executor.JobExecutorThread.run(JobExecutorThread.java:63)
Caused by: java.lang.NullPointerException
at org.jbpm.file.def.FileDefinition.getBytesFromDb(FileDefinition.java:213)
at org.jbpm.file.def.FileDefinition.getBytes(FileDefinition.java:193)
... 71 more