Attempted to create a KimPrincipalRecipient with a null KimP

org.kuali.rice.ksb.messaging.MessageProcessingException: java.lang.reflect.InvocationTargetException
    at org.kuali.rice.ksb.messaging.MessageServiceInvoker$1.doInTransaction(MessageServiceInvoker.java:76)
    at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130)
    at org.kuali.rice.ksb.messaging.MessageServiceInvoker.run(MessageServiceInvoker.java:67)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.kuali.rice.ksb.messaging.MessageServiceInvoker.invokeService(MessageServiceInvoker.java:157)
    at org.kuali.rice.ksb.messaging.MessageServiceInvoker$1.doInTransaction(MessageServiceInvoker.java:72)
    ... 5 more
Caused by: org.kuali.rice.kew.exception.RouteManagerException: org.kuali.rice.kew.exception.RouteManagerException: Attempted to create a KimPrincipalRecipient with a null KimPrincipal!
    at org.kuali.rice.kew.engine.StandardWorkflowEngine.process(StandardWorkflowEngine.java:156)
    at org.kuali.rice.kew.impl.document.DocumentProcessingQueueImpl.processWithOptions(DocumentProcessingQueueImpl.java:66)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
    at com.sun.proxy.$Proxy200.processWithOptions(Unknown Source)
    ... 11 more
Caused by: org.kuali.rice.kew.exception.RouteManagerException: Attempted to create a KimPrincipalRecipient with a null KimPrincipal!
    at org.kuali.rice.kew.engine.node.RequestsNode.process(RequestsNode.java:89)
    at org.kuali.rice.kew.engine.transition.SimpleTransitionEngine.isComplete(SimpleTransitionEngine.java:35)
    at org.kuali.rice.kew.engine.StandardWorkflowEngine.processNodeInstance(StandardWorkflowEngine.java:183)
    at org.kuali.rice.kew.engine.StandardWorkflowEngine.process(StandardWorkflowEngine.java:146)
    ... 23 more
Caused by: java.lang.IllegalArgumentException: Attempted to create a KimPrincipalRecipient with a null KimPrincipal!
    at org.kuali.rice.kew.actionrequest.KimPrincipalRecipient.<init>(KimPrincipalRecipient.java:38)
    at org.kuali.rice.kew.actionrequest.KimPrincipalRecipient.<init>(KimPrincipalRecipient.java:33)
    at org.kuali.rice.kew.actionrequest.ActionRequestFactory.addRoleResponsibilityRequest(ActionRequestFactory.java:439)
    at org.kuali.rice.kew.role.RoleRouteModule.findActionRequests(RoleRouteModule.java:115)
    at org.kuali.rice.kew.engine.node.RequestsNode.getNewActionRequests(RequestsNode.java:185)
    at org.kuali.rice.kew.engine.node.RoleNode.processCustom(RoleNode.java:86)
    at org.kuali.rice.kew.engine.node.RequestsNode.process(RequestsNode.java:55)
    ... 26 more