Unable to import from Trello on JIRA Core (IndexOutOfBoundsException)

2016-01-22 23:31:33,975 JiraTaskExectionThread-2 ERROR admin 1411x8837x2 s2pr78 0:0:0:0:0:0:0:1 /secure/admin/ImporterLogsPage!import.jspa [c.a.j.p.i.i.importer.impl.AbstractDataImporter$1Thread[http-nio-8090-exec-22,5,main]] Unexpected failure occurred. Importer will stop immediately. Data may be in an unstable state
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
	at java.util.ArrayList.rangeCheck(ArrayList.java:653)
	at java.util.ArrayList.get(ArrayList.java:429)
	at com.atlassian.jira.plugins.importer.trello.WorkflowHelperImpl.addArchivePostFunctions(WorkflowHelperImpl.java:347)
	at com.atlassian.jira.plugins.importer.trello.WorkflowHelperImpl.createInitialTrelloWorkflowDescriptor(WorkflowHelperImpl.java:306)
	at com.atlassian.jira.plugins.importer.trello.WorkflowHelperImpl.createWorkflow(WorkflowHelperImpl.java:215)
	at com.atlassian.jira.plugins.importer.trello.WorkflowHelperImpl.createWorkflowForBoard(WorkflowHelperImpl.java:106)
	at com.atlassian.jira.plugins.importer.trello.transformers.BoardTransformer.apply(BoardTransformer.java:58)
	at com.atlassian.jira.plugins.importer.trello.transformers.BoardTransformer.apply(BoardTransformer.java:22)
	at com.google.common.collect.Iterators$8.transform(Iterators.java:799)
	at com.google.common.collect.TransformedIterator.next(TransformedIterator.java:48)
	at java.util.AbstractCollection.addAll(AbstractCollection.java:343)
	at java.util.HashSet.<init>(HashSet.java:119)
	at com.google.common.collect.Sets.newHashSet(Sets.java:218)
	at com.atlassian.jira.plugins.importer.trello.TrelloImporterDataBean.getAllProjects(TrelloImporterDataBean.java:81)
	at com.atlassian.jira.plugins.importer.imports.importer.AbstractDataBean.getSelectedProjects(AbstractDataBean.java:29)
	at com.atlassian.jira.plugins.importer.imports.importer.impl.DefaultJiraDataImporter.preImport(DefaultJiraDataImporter.java:509)
	at com.atlassian.jira.plugins.importer.imports.importer.impl.DefaultJiraDataImporter.doImport(DefaultJiraDataImporter.java:321)
	... 3 filtered
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
	at org.eclipse.gemini.blueprint.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:56)
	at org.eclipse.gemini.blueprint.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:60)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:133)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:121)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.eclipse.gemini.blueprint.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:70)
	at org.eclipse.gemini.blueprint.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:53)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.eclipse.gemini.blueprint.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:57)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:133)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:121)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
	at com.sun.proxy.$Proxy3656.doImport(Unknown Source)
	at com.atlassian.jira.plugins.importer.imports.importer.impl.ImporterCallable.call(ImporterCallable.java:26)
	at com.atlassian.jira.plugins.importer.imports.importer.impl.ImporterCallable.call(ImporterCallable.java:15)
	at com.atlassian.jira.task.TaskManagerImpl$TaskCallableDecorator.call(TaskManagerImpl.java:453)
	at com.atlassian.jira.task.TaskManagerImpl$TaskCallableDecorator.call(TaskManagerImpl.java:421)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at com.atlassian.jira.task.ForkedThreadExecutor$ForkedRunnableDecorator.run(ForkedThreadExecutor.java:216)
	at java.lang.Thread.run(Thread.java:745)
2016-01-22 23:31:33,977 JiraTaskExectionThread-2 INFO admin 1411x8837x2 s2pr78 0:0:0:0:0:0:0:1 /secure/admin/ImporterLogsPage!import.jspa [c.a.j.p.i.i.importer.impl.AbstractDataImporter$1Thread[http-nio-8090-exec-22,5,main]] No issues need to be reindexed.
2016-01-22 23:31:34,025 http-nio-8090-exec-4 ERROR admin 1411x8838x2 s2pr78 0:0:0:0:0:0:0:1 /secure/admin/ImporterLogsPage!viewLogs.jspa [velocity] Exception rendering #parse(/templates/standard/jiraformheader.vm) at com.atlassian.jira.plugins.jira-importers-plugin:actions//templates/admin/views/common/viewlogs.vm[line 9, column 1]
2016-01-22 23:31:34,026 http-nio-8090-exec-4 ERROR admin 1411x8838x2 s2pr78 0:0:0:0:0:0:0:1 /secure/admin/ImporterLogsPage!viewLogs.jspa [c.atlassian.velocity.DefaultVelocityManager] MethodInvocationException occurred getting message body from Velocity: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
	at java.util.ArrayList.rangeCheck(ArrayList.java:653)
	at java.util.ArrayList.get(ArrayList.java:429)
	at com.atlassian.jira.plugins.importer.trello.WorkflowHelperImpl.addArchivePostFunctions(WorkflowHelperImpl.java:347)
	at com.atlassian.jira.plugins.importer.trello.WorkflowHelperImpl.createInitialTrelloWorkflowDescriptor(WorkflowHelperImpl.java:306)
	at com.atlassian.jira.plugins.importer.trello.WorkflowHelperImpl.createWorkflow(WorkflowHelperImpl.java:215)
	at com.atlassian.jira.plugins.importer.trello.WorkflowHelperImpl.createWorkflowForBoard(WorkflowHelperImpl.java:106)
	at com.atlassian.jira.plugins.importer.trello.transformers.BoardTransformer.apply(BoardTransformer.java:58)
	at com.atlassian.jira.plugins.importer.trello.transformers.BoardTransformer.apply(BoardTransformer.java:22)
	at com.google.common.collect.Iterators$8.transform(Iterators.java:799)
	at com.google.common.collect.TransformedIterator.next(TransformedIterator.java:48)
	at java.util.AbstractCollection.addAll(AbstractCollection.java:343)
	at java.util.HashSet.<init>(HashSet.java:119)
	at com.google.common.collect.Sets.newHashSet(Sets.java:218)
	at com.atlassian.jira.plugins.importer.trello.TrelloImporterDataBean.getAllProjects(TrelloImporterDataBean.java:81)
	at com.atlassian.jira.plugins.importer.imports.importer.AbstractDataBean.getSelectedProjects(AbstractDataBean.java:29)
	at com.atlassian.jira.plugins.importer.imports.importer.impl.AbstractDataImporter.getSelectedProjects(AbstractDataImporter.java:163)
	... 3 filtered
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
	at org.eclipse.gemini.blueprint.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:56)
	at org.eclipse.gemini.blueprint.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:60)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:133)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:121)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.eclipse.gemini.blueprint.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:70)
	at org.eclipse.gemini.blueprint.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:53)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.eclipse.gemini.blueprint.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:57)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:133)
	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:121)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
	at com.sun.proxy.$Proxy3656.getSelectedProjects(Unknown Source)
	at com.atlassian.jira.plugins.importer.web.ImporterLogsPage.getFormTitle(ImporterLogsPage.java:168)
	... 3 filtered
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.velocity.runtime.parser.node.PropertyExecutor.execute(PropertyExecutor.java:142)
	at org.apache.velocity.util.introspection.UberspectImpl$VelGetterImpl.invoke(UberspectImpl.java:529)
	at org.apache.velocity.runtime.parser.node.ASTIdentifier.execute(ASTIdentifier.java:198)
	at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:262)
	at org.apache.velocity.runtime.parser.node.ASTReference.evaluate(ASTReference.java:470)
	at org.apache.velocity.runtime.parser.node.ASTExpression.evaluate(ASTExpression.java:62)
	at org.apache.velocity.runtime.parser.node.ASTIfStatement.render(ASTIfStatement.java:85)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:336)
	at org.apache.velocity.runtime.directive.Parse.render(Parse.java:263)
	at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:175)
	at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:336)
	at org.apache.velocity.Template.merge(Template.java:328)
	at org.apache.velocity.Template.merge(Template.java:235)
	at org.apache.velocity.app.VelocityEngine.mergeTemplate(VelocityEngine.java:381)
	at com.atlassian.velocity.DefaultVelocityManager.writeEncodedBodyImpl(DefaultVelocityManager.java:117)
	at com.atlassian.velocity.DefaultVelocityManager.writeEncodedBody(DefaultVelocityManager.java:97)
	at com.atlassian.jira.template.velocity.DefaultVelocityTemplatingEngine$DefaultRenderRequest.toWriterImpl(DefaultVelocityTemplatingEngine.java:122)
	at com.atlassian.jira.template.velocity.DefaultVelocityTemplatingEngine$DefaultRenderRequest.asHtml(DefaultVelocityTemplatingEngine.java:113)
	... 4 filtered
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	... 110 filtered
	at com.atlassian.jira.security.JiraSecurityFilter.doFilter(JiraSecurityFilter.java:70)
	... 99 filtered
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:745)