[jbpm-dev] no class specified in assignment ?!

[Heiko Braun]

If I deploy a process I get tis warning in server.log:

11:49:16,882 WARN  [JpdlXmlReader] process xml warning: no class  
specified in <assignment xmlns="urn:jbpm.org:jpdl-3.2" config- 
type="field"/>


Later on ending the task fails as follows:

org.jbpm.graph.def.DelegationException
	at  
org 
.jbpm 
.taskmgmt.exe.TaskMgmtInstance.performAssignment(TaskMgmtInstance.java: 
262)

[...]

Caused by: java.lang.NullPointerException
	at  
EDU 
.oswego 
.cs 
.dl 
.util 
.concurrent.ConcurrentReaderHashMap.hash(ConcurrentReaderHashMap.java: 
298)
	at  
EDU 
.oswego 
.cs 
.dl 
.util 
.concurrent.ConcurrentReaderHashMap.get(ConcurrentReaderHashMap.java: 
410)
	at  
org 
.jboss 
.mx 
.loading 
.UnifiedLoaderRepository3.getCachedClass(UnifiedLoaderRepository3.java: 
222)
	at  
org 
.jboss 
.mx.loading.RepositoryClassLoader.loadClass(RepositoryClassLoader.java: 
403)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
	at org.jbpm.instantiation.Delegation.instantiate(Delegation.java:145)
	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:585)
	at  
org 
.hibernate 
.proxy 
.pojo 
.javassist 
.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:173)
	at org.jbpm.instantiation.Delegation_$ 
$_javassist_4.instantiate(Delegation_$$_javassist_4.java)
	at  
org 
.jbpm 
.taskmgmt 
.exe 
.TaskMgmtInstance.performAssignmentDelegation(TaskMgmtInstance.java:274)
	at  
org 
.jbpm 
.taskmgmt.exe.TaskMgmtInstance.performAssignment(TaskMgmtInstance.java: 
247)
	... 106 more


Can someone shed some light on this?

/Heiko