NPE while creating new card from agile/planning

2010-03-25 06:57:19,355 ajp-8009-10 ERROR grgr 25039x6246x1 141zpa6 /secure/GHAddIssue.jspa [velocity] Method getAllAvailableValuesForSelect threw exception for reference $afield in template templates/greenhopper/jira/issue/fields/assignee-create.vm at  [9,53]
2010-03-25 06:57:19,355 ajp-8009-10 ERROR grgr 25039x6246x1 141zpa6 /secure/GHAddIssue.jspa [com.atlassian.velocity.DefaultVelocityManager] MethodInvocationException occurred getting message body from Velocity: java.lang.NullPointerException
java.lang.NullPointerException
	at com.pyxis.greenhopper.jira.boards.AssigneeBoard.compareTo(AssigneeBoard.java:206)
	at com.pyxis.greenhopper.jira.boards.AssigneeBoard.compareTo(AssigneeBoard.java:26)
	at java.util.TreeMap.put(TreeMap.java:545)
	at java.util.TreeSet.add(TreeSet.java:238)
	at java.util.AbstractCollection.addAll(AbstractCollection.java:305)
	at java.util.TreeSet.addAll(TreeSet.java:295)
	at java.util.TreeSet.<init>(TreeSet.java:143)
	at com.pyxis.greenhopper.jira.boards.context.DefaultBoardContext.getSortedAssigneeBoards(DefaultBoardContext.java:430)
	at com.pyxis.greenhopper.jira.fields.Assignee.getAllAvailableValuesForSelect(Assignee.java:120)
	at sun.reflect.GeneratedMethodAccessor1358.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:234)
...

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Details:
-------
org.apache.velocity.exception.MethodInvocationException: Invocation of method 'getAllBoards' in  class com.pyxis.greenhopper.jira.boards.AssigneeBoard threw exception class java.lang.NullPointerException : null
	at org.apache.velocity.runtime.parser.node.ASTIdentifier.execute(ASTIdentifier.java:183)
	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:175)
	at org.apache.velocity.runtime.parser.node.ASTReference.value(ASTReference.java:327)
	at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:131)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:114)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:230)
	at org.apache.velocity.runtime.directive.Parse.render(Parse.java:181)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:114)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:230)
	at org.apache.velocity.runtime.directive.Parse.render(Parse.java:181)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:114)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:230)
	at org.apache.velocity.runtime.directive.Parse.render(Parse.java:181)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:114)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:230)
	at org.apache.velocity.Template.merge(Template.java:256)
	at org.apache.velocity.app.VelocityEngine.mergeTemplate(VelocityEngine.java:450)
	at com.atlassian.velocity.DefaultVelocityManager.getEncodedBody(DefaultVelocityManager.java:77)
	at com.atlassian.jira.plugin.webwork.JiraPluginWebworkVelocityServlet.service(JiraPluginWebworkVelocityServlet.java:53)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
	at com.atlassian.jira.web.dispatcher.JiraServletDispatcher.service(JiraServletDispatcher.java:251)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)