Extending cm:person causes activiti to fail?

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oleh

I seem to have encountered a bug (and by the looks of it, I'm not the only one) regarding extending cmerson in the content model.
Or maybe I'm doing something horrible wrong, in which case I hope to be corrected

The basic summary: If a user contains a property with multiple values (either directly set on the cmerson definition or via an aspect), the user is unable to start activiti workflows.

I have verified this bug on Alfresco Community 4.0.d, aswell as Enterprise 4.0.1.

I've installed both a fresh community and enterprise (4.0.d/4.0.1) to be absolutely 100% that none of my custom code is the cause of it, and it's pretty clear: as soon as you put a multiple property on a user, that user can't start workflows until the field is removed again.

Now, I've looked around for a solution, which gave me a really sad impression of the bugtracker/support. Looking at these:
https://issues.alfresco.com/jira/browse/ALF-13213
https://issues.alfresco.com/jira/browse/ALF-11456

They brush it off as cannot reproduce, but in my opinion, both tickets are pretty clear on how to reproduce the error. It might just be me, but it seems a bit odd just to brush it off, anyways here is my take on explaining the issue:

Extend the cmerson object like this:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <property name="cm:phonenumbers">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <type>d:text</type>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <multiple>true</multiple>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </property>
‍‍‍‍‍‍

NOTE: Official docs are very unclear on how to extend cmerson, in my case I've overridden all of cmerson and added the fields.
HOWEVER, I have tried deleting my custom model, adding a custom aspect with the same field with the same result.

Now, having the field isn't enough, if the field is in the definition it's all and fine, until it get's a value.
Here's a small javascript that will trigger the error:

var node = search.findNode("workspace://SpacesStore/56371731-db48-4620-9e20-9a447e9480a8"); // Some random node in my repository
var user = people.getPerson("admin");

user.properties["cm:phonenumbers"] = ['Phone #1', 'Phone #2'];
user.save();

var wf = actions.create("start-workflow");
wf.parameters.workflowName = "activiti$activitiAdhoc";
wf.parameters["bpm:workflowDescription"] = "My task title";
wf.parameters["bpm:assignee"] = user;
wf.execute(node);
‍‍‍‍‍‍‍‍‍‍‍‍‍

This will result in the following exception:
(Look a bit futher down, you see a NPE from Activiti)

ERROR [extensions.webscripts.AbstractRuntime] [http-8080-14] Exception from executeScript - redirecting to status template error: 05240009 Wrapped Exception (with status template): 05240023 Failed to execute script 'classpath*:alfresco/templates/webscripts/de/fme/jsconsole/execute.post.js': 05240022 Failed to start workflow activiti$activitiAdhoc:1:3.
 org.springframework.extensions.webscripts.WebScriptException: 05240009 Wrapped Exception (with status template): 05240023 Failed to execute script 'classpath*:alfresco/templates/webscripts/de/fme/jsconsole/execute.post.js': 05240022 Failed to start workflow activiti$activitiAdhoc:1:3.
   at org.springframework.extensions.webscripts.AbstractWebScript.createStatusException(AbstractWebScript.java:1047)
   at org.springframework.extensions.webscripts.DeclarativeWebScript.execute(DeclarativeWebScript.java:171)
   at org.alfresco.repo.web.scripts.RepositoryContainer$2.execute(RepositoryContainer.java:400)
   at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:388)
   at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecute(RepositoryContainer.java:462)
   at org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecuteAs(RepositoryContainer.java:500)
   at org.alfresco.repo.web.scripts.RepositoryContainer.executeScript(RepositoryContainer.java:316)
   at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:372)
   at org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:209)
   at org.springframework.extensions.webscripts.servlet.WebScriptServlet.service(WebScriptServlet.java:118)
   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.alfresco.web.app.servlet.GlobalLocalizationFilter.doFilter(GlobalLocalizationFilter.java:58)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:470)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
   at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
   at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:602)
   at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
   at java.lang.Thread.run(Thread.java:680)
Caused by: org.alfresco.scripts.ScriptException: 05240023 Failed to execute script 'classpath*:alfresco/templates/webscripts/de/fme/jsconsole/execute.post.js': 05240022 Failed to start workflow activiti$activitiAdhoc:1:3.
   at org.alfresco.repo.jscript.RhinoScriptProcessor.execute(RhinoScriptProcessor.java:202)
   at org.alfresco.repo.processor.ScriptServiceImpl.execute(ScriptServiceImpl.java:212)
   at org.alfresco.repo.processor.ScriptServiceImpl.executeScript(ScriptServiceImpl.java:174)
   at org.alfresco.repo.web.scripts.RepositoryScriptProcessor.executeScript(RepositoryScriptProcessor.java:102)
   at org.springframework.extensions.webscripts.AbstractWebScript.executeScript(AbstractWebScript.java:1285)
   at org.springframework.extensions.webscripts.DeclarativeWebScript.execute(DeclarativeWebScript.java:86)
   … 25 more
Caused by: org.alfresco.service.cmr.workflow.WorkflowException: 05240022 Failed to start workflow activiti$activitiAdhoc:1:3.
   at org.alfresco.repo.workflow.activiti.ActivitiWorkflowEngine.startWorkflow(ActivitiWorkflowEngine.java:1041)
   at org.alfresco.repo.workflow.WorkflowServiceImpl.startWorkflow(WorkflowServiceImpl.java:401)
   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)
   at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
   at org.alfresco.repo.security.permissions.impl.AlwaysProceedMethodInterceptor.invoke(AlwaysProceedMethodInterceptor.java:34)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
   at org.alfresco.repo.security.permissions.impl.ExceptionTranslatorMethodInterceptor.invoke(ExceptionTranslatorMethodInterceptor.java:46)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
   at org.alfresco.repo.audit.AuditMethodInterceptor.invoke(AuditMethodInterceptor.java:152)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
   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 $Proxy71.startWorkflow(Unknown Source)
   at org.alfresco.repo.workflow.StartWorkflowActionExecuter.executeImpl(StartWorkflowActionExecuter.java:145)
   at org.alfresco.repo.action.executer.ActionExecuterAbstractBase.execute(ActionExecuterAbstractBase.java:196)
   at org.alfresco.repo.action.ActionServiceImpl.directActionExecution(ActionServiceImpl.java:790)
   at org.alfresco.repo.action.ActionServiceImpl.executeActionImpl(ActionServiceImpl.java:701)
   at org.alfresco.repo.action.ActionServiceImpl.executeAction(ActionServiceImpl.java:539)
   at org.alfresco.repo.action.ActionServiceImpl.executeAction(ActionServiceImpl.java:525)
   at org.alfresco.repo.action.ActionServiceImpl.executeAction(ActionServiceImpl.java:799)
   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)
   at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
   at org.alfresco.repo.security.permissions.impl.AlwaysProceedMethodInterceptor.invoke(AlwaysProceedMethodInterceptor.java:34)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
   at org.alfresco.repo.security.permissions.impl.ExceptionTranslatorMethodInterceptor.invoke(ExceptionTranslatorMethodInterceptor.java:46)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
   at org.alfresco.repo.audit.AuditMethodInterceptor.invoke(AuditMethodInterceptor.java:152)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
   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 $Proxy37.executeAction(Unknown Source)
   at org.alfresco.repo.jscript.ScriptAction.executeImpl(ScriptAction.java:166)
   at org.alfresco.repo.jscript.ScriptAction.execute(ScriptAction.java:136)
   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)
   at org.mozilla.javascript.MemberBox.invoke(MemberBox.java:155)
   at org.mozilla.javascript.NativeJavaMethod.call(NativeJavaMethod.java:243)
   at org.mozilla.javascript.Interpreter.interpretLoop(Interpreter.java:3237)
   at org.mozilla.javascript.Interpreter.interpret(Interpreter.java:2394)
   at org.mozilla.javascript.InterpretedFunction.call(InterpretedFunction.java:162)
   at org.mozilla.javascript.ScriptRuntime.applyOrCall(ScriptRuntime.java:2234)
   at org.mozilla.javascript.BaseFunction.execIdCall(BaseFunction.java:257)
   at org.mozilla.javascript.IdFunctionObject.call(IdFunctionObject.java:127)
   at org.mozilla.javascript.Interpreter.interpretLoop(Interpreter.java:3237)
   at org.mozilla.javascript.Interpreter.interpret(Interpreter.java:2394)
   at org.mozilla.javascript.InterpretedFunction.call(InterpretedFunction.java:162)
   at org.mozilla.javascript.ScriptRuntime.evalSpecial(ScriptRuntime.java:2280)
   at org.mozilla.javascript.ScriptRuntime.callSpecial(ScriptRuntime.java:2143)
   at org.mozilla.javascript.optimizer.OptRuntime.callSpecial(OptRuntime.java:165)
   at org.mozilla.javascript.gen.c14._c0(jar:file:/Applications/alfresco-4.0.1/tomcat/shared/lib/javascript-console-0.4.2.jar!/alfresco/templates/webscripts/de/fme/jsconsole/execute.post.js:216)
   at org.mozilla.javascript.gen.c14.call(jar:file:/Applications/alfresco-4.0.1/tomcat/shared/lib/javascript-console-0.4.2.jar!/alfresco/templates/webscripts/de/fme/jsconsole/execute.post.js)
   at org.mozilla.javascript.ContextFactory.doTopCall(ContextFactory.java:393)
   at org.mozilla.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:2834)
   at org.mozilla.javascript.gen.c14.call(jar:file:/Applications/alfresco-4.0.1/tomcat/shared/lib/javascript-console-0.4.2.jar!/alfresco/templates/webscripts/de/fme/jsconsole/execute.post.js)
   at org.mozilla.javascript.gen.c14.exec(jar:file:/Applications/alfresco-4.0.1/tomcat/shared/lib/javascript-console-0.4.2.jar!/alfresco/templates/webscripts/de/fme/jsconsole/execute.post.js)
   at org.alfresco.repo.jscript.RhinoScriptProcessor.executeScriptImpl(RhinoScriptProcessor.java:492)
   at org.alfresco.repo.jscript.RhinoScriptProcessor.execute(RhinoScriptProcessor.java:198)
   … 30 more
Caused by: org.activiti.engine.ActivitiException: Error while evalutaing expression
   at org.activiti.engine.impl.el.JuelExpression.getValue(JuelExpression.java:59)
   at org.activiti.engine.impl.bpmn.behavior.UserTaskActivityBehavior.handleAssignments(UserTaskActivityBehavior.java:80)
   at org.activiti.engine.impl.bpmn.behavior.UserTaskActivityBehavior.execute(UserTaskActivityBehavior.java:67)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(AtomicOperationActivityExecute.java:40)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerStart.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerStart.java:48)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:52)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:45)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionCreateScope.execute(AtomicOperationTransitionCreateScope.java:44)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerTake.execute(AtomicOperationTransitionNotifyListenerTake.java:61)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionDestroyScope.execute(AtomicOperationTransitionDestroyScope.java:111)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationTransitionNotifyListenerEnd.eventNotificationsCompleted(AtomicOperationTransitionNotifyListenerEnd.java:36)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:52)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:45)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.take(ExecutionEntity.java:326)
   at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performOutgoingBehavior(BpmnActivityBehavior.java:92)
   at org.activiti.engine.impl.bpmn.behavior.BpmnActivityBehavior.performDefaultOutgoingBehavior(BpmnActivityBehavior.java:49)
   at org.activiti.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.leave(FlowNodeActivityBehavior.java:44)
   at org.activiti.engine.impl.bpmn.behavior.FlowNodeActivityBehavior.execute(FlowNodeActivityBehavior.java:36)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationActivityExecute.execute(AtomicOperationActivityExecute.java:40)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationProcessStartInitial.eventNotificationsCompleted(AtomicOperationProcessStartInitial.java:44)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:52)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
   at org.activiti.engine.impl.pvm.runtime.AtomicOperationProcessStart.eventNotificationsCompleted(AtomicOperationProcessStart.java:44)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:52)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
   at org.activiti.engine.impl.pvm.runtime.AbstractEventAtomicOperation.execute(AbstractEventAtomicOperation.java:45)
   at org.activiti.engine.impl.interceptor.CommandContext.performOperation(CommandContext.java:76)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.performOperation(ExecutionEntity.java:481)
   at org.activiti.engine.impl.persistence.entity.ExecutionEntity.start(ExecutionEntity.java:280)
   at org.activiti.engine.impl.cmd.StartProcessInstanceCmd.execute(StartProcessInstanceCmd.java:72)
   at org.activiti.engine.impl.cmd.StartProcessInstanceCmd.execute(StartProcessInstanceCmd.java:31)
   at org.activiti.engine.impl.interceptor.CommandExecutorImpl.execute(CommandExecutorImpl.java:24)
   at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:42)
   at org.activiti.spring.SpringTransactionInterceptor$1.doInTransaction(SpringTransactionInterceptor.java:42)
   at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130)
   at org.activiti.spring.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:40)
   at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:33)
   at org.activiti.engine.impl.RuntimeServiceImpl.startProcessInstanceById(RuntimeServiceImpl.java:65)
   at org.alfresco.repo.workflow.activiti.ActivitiWorkflowEngine.startWorkflow(ActivitiWorkflowEngine.java:1026)
   … 100 more
Caused by: org.activiti.engine.impl.javax.el.ELException: java.lang.NullPointerException
   at org.activiti.engine.impl.javax.el.BeanELResolver.getValue(BeanELResolver.java:305)
   at org.activiti.engine.impl.javax.el.CompositeELResolver.getValue(CompositeELResolver.java:231)
   at org.activiti.engine.impl.juel.AstProperty.eval(AstProperty.java:61)
   at org.activiti.engine.impl.juel.AstProperty.eval(AstProperty.java:52)
   at org.activiti.engine.impl.juel.AstEval.eval(AstEval.java:50)
   at org.activiti.engine.impl.juel.AstNode.getValue(AstNode.java:26)
   at org.activiti.engine.impl.juel.TreeValueExpression.getValue(TreeValueExpression.java:114)
   at org.activiti.engine.impl.delegate.ExpressionGetInvocation.invoke(ExpressionGetInvocation.java:33)
   at org.activiti.engine.impl.delegate.DelegateInvocation.proceed(DelegateInvocation.java:37)
   at org.activiti.engine.impl.delegate.DefaultDelegateInterceptor.handleInvocation(DefaultDelegateInterceptor.java:25)
   at org.activiti.engine.impl.el.JuelExpression.getValue(JuelExpression.java:50)
   … 158 more
Caused by: java.lang.NullPointerException
   at org.mozilla.javascript.ScriptableObject.getTopLevelScope(ScriptableObject.java:1483)
   at org.mozilla.javascript.ScriptRuntime.setObjectProtoAndParent(ScriptRuntime.java:3106)
   at org.mozilla.javascript.Context.newArray(Context.java:1547)
   at org.alfresco.repo.jscript.ValueConverter.convertValueForScript(ValueConverter.java:122)
   at org.alfresco.repo.jscript.ScriptNode$NodeValueConverter.convertValueForScript(ScriptNode.java:3429)
   at org.alfresco.repo.workflow.activiti.ActivitiScriptNode$JBPMNodeConverter.convertValueForScript(ActivitiScriptNode.java:93)
   at org.alfresco.repo.jscript.ScriptNode$NodeValueConverter.convertValueForScript(ScriptNode.java:3408)
   at org.alfresco.repo.jscript.ScriptNode.getProperties(ScriptNode.java:944)
   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)
   at org.activiti.engine.impl.javax.el.BeanELResolver.getValue(BeanELResolver.java:303)
   … 168 more
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The same error will be triggered if you try to go through Share and start a new activiti workflow (either one will do).

To prove that the multiple-field is indeed the cause of the error, try removing it again:

var user = people.getPerson("admin");
delete user.properties["cm:phonenumbers"];
user.save();
‍‍‍‍‍

And try to start a workflow again. No errors.

I hope someone can help me out with this issue..

oleh

Since there has been no answers, I've created a new issue in JIRA:
https://issues.alfresco.com/jira/browse/ALF-14863