Exception when trying to display planned items

I'm running into an annoying issue with RTC CCM where I cannot view a plan. When I try to view one of my sprints I get the following exception message:

java.lang.NullPointerException
com.ibm.team.apt.internal.service.rest.serialize.workitem.WorkflowActionSerializable.getActionResultState(WorkflowActionSerializable.java:94)
com.ibm.team.apt.internal.service.rest.serialize.workitem.WorkflowActionSerializable.serialize(WorkflowActionSerializable.java:60)
com.ibm.team.apt.internal.service.rest.serialize.workitem.WorkflowActionSerializable.serialize(WorkflowActionSerializable.java:1)
com.ibm.team.apt.internal.service.rest.serialize.AbstractUIItemSerializable.serialize(AbstractUIItemSerializable.java:1)
com.ibm.team.apt.internal.service.rest.serialize.WebUISerializer.buildDTOs(WebUISerializer.java:364)
com.ibm.team.apt.internal.service.rest.PlanRestService.postGetItems2(PlanRestService.java:746)
sun.reflect.GeneratedMethodAccessor469.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:618)
org.eclipse.soda.sat.core.internal.record.ExportProxyServiceRecord.invoke(ExportProxyServiceRecord.java:370)

After that there isn't much displayed; I get the name of my sprint and the number of work items (total/open/closed). The plan details section shows 'Pending...' for all fields and the 'View As' dropdown is empty. Nothing displays after that. I'm running version 3.0.1.2 on db2.

Thanks,
-Ben