Hi there !

=== Environment ==============================
- jBPM Version : 4.1
- Database : Oracle 10.2
- JDK : 1.6
- Container : JBoss 4.2.3
- Configuration : Custom jbpm.cfg.xml:

<?xml version="1.0" encoding="UTF-8"?>
<jbpm-configuration>
 <import resource="jbpm.default.cfg.xml" />
 <import resource="jbpm.businesscalendar.cfg.xml" />
 <import resource="jbpm.tx.jta.cfg.xml" />
 <import resource="jbpm.jpdl.cfg.xml" />
 <!--import resource="jbpm.identity.cfg.xml" /-->
 <import resource="jbpm.jobexecutor.cfg.xml" />
 <transaction-context>
 <object class="com.feltengroup.jbpm.PilotIdentitySession" />
 </transaction-context>
</jbpm-configuration>

- Libraries : the libs from inside the jbpm distribution

=== Process ==================================
Just a Test Jpdl: Start -> Task -> End

=== API ===================================
Task task = taskService.getTask( "myTaskId" );

task.setAssignee( "myUserName" );


=== Stacktrace ==============================
org.jbpm.api.JbpmException: no environment to get org.jbpm.pvm.internal.session.RepositorySession
at org.jbpm.pvm.internal.env.EnvironmentImpl.getFromCurrent(EnvironmentImpl.java:197)
at org.jbpm.pvm.internal.env.EnvironmentImpl.getFromCurrent(EnvironmentImpl.java:190)
at org.jbpm.pvm.internal.model.ExecutionImpl.getProcessDefinition(ExecutionImpl.java:1096)
at org.jbpm.pvm.internal.model.ExecutionImpl.getActivity(ExecutionImpl.java:1118)
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)

=== Problem description =========================
I'm using JBPM 4.1 with a Seam 2.2.0/Richfaces 3.3.1 (no Pageflows). From a WebPage I try to set the assignee on a Task, it results in the Exception described above.
All other set* Functions on Task are working. TaskService.assignTask is working too!

Best Regards,
Joerg