After upgrading JIRA Agile: JIRA Agile is currently unavailable. This might be because an upgrade task has failed to run or has not not yet completed.

I just upgraded to version 6.3.2 and got an error that JIRA Agile is not accessible below is the exception I had in the log file

2013-09-26 01:50:54,323 localhost-startStop-1 ERROR [sal.core.upgrade.PluginUpgrader] Upgrade failed: com.pyxis.greenhopper.jira.fields.NotSupported cannot be cast to com.pyxis.greenhopper.jira.fields.CustomIssueField
java.lang.ClassCastException: com.pyxis.greenhopper.jira.fields.NotSupported cannot be cast to com.pyxis.greenhopper.jira.fields.CustomIssueField
at com.atlassian.greenhopper.service.issue.DefaultFieldsServiceImpl.getBusinessValueCustomField(DefaultFieldsServiceImpl.java:62)
at com.atlassian.greenhopper.upgrade.GhUpgradeTask040.updateBusinessValueField(GhUpgradeTask040.java:317)
at com.atlassian.greenhopper.upgrade.GhUpgradeTask040.performUpgrade(GhUpgradeTask040.java:105)
at com.atlassian.greenhopper.upgrade.AbstractGhUpgradeTask.doUpgrade(AbstractGhUpgradeTask.java:62)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) <+2>
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58)
at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56)
at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at com.sun.proxy.$Proxy583.doUpgrade(Unknown Source)
at com.atlassian.sal.core.upgrade.PluginUpgrader.doUpgrade(PluginUpgrader.java:85)
at com.atlassian.sal.core.upgrade.PluginUpgrader.upgrade(PluginUpgrader.java:66)
at com.atlassian.sal.core.upgrade.DefaultPluginUpgradeManager.upgradePlugin(DefaultPluginUpgradeManager.java:204)
at com.atlassian.sal.core.upgrade.DefaultPluginUpgradeManager.upgradeInternal(DefaultPluginUpgradeManager.java:161)
at com.atlassian.sal.core.upgrade.DefaultPluginUpgradeManager$1.doInTransaction(DefaultPluginUpgradeManager.java:140)
at com.atlassian.sal.core.transaction.HostContextTransactionTemplate$1.doInTransaction(HostContextTransactionTemplate.java:25)
at com.atlassian.jira.DefaultHostContextAccessor.doInTransaction(DefaultHostContextAccessor.java:34) <+3>
at java.lang.reflect.Method.invoke(Unknown Source)
at com.atlassian.plugin.osgi.hostcomponents.impl.DefaultComponentRegistrar$ContextClassLoaderSettingInvocationHandler.invoke(DefaultComponentRegistrar.java:129)
at com.sun.proxy.$Proxy317.doInTransaction(Unknown Source) <+3>
at java.lang.reflect.Method.invoke(Unknown Source)
at com.atlassian.plugin.osgi.bridge.external.HostComponentFactoryBean$DynamicServiceInvocationHandler.invoke(HostComponentFactoryBean.java:154)
at com.sun.proxy.$Proxy317.doInTransaction(Unknown Source)
at com.atlassian.sal.core.transaction.HostContextTransactionTemplate.execute(HostContextTransactionTemplate.java:21)
at com.atlassian.sal.core.upgrade.DefaultPluginUpgradeManager.upgrade(DefaultPluginUpgradeManager.java:136)
at com.atlassian.sal.core.upgrade.DefaultPluginUpgradeManager.onStart(DefaultPluginUpgradeManager.java:73) <+3>
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58)
at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56)
at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at com.sun.proxy.$Proxy585.onStart(Unknown Source)
at com.atlassian.sal.core.lifecycle.DefaultLifecycleManager.notifyLifecycleAwareOfStart(DefaultLifecycleManager.java:99)
at com.atlassian.sal.core.lifecycle.DefaultLifecycleManager.notifyOnStart(DefaultLifecycleManager.java:91)
at com.atlassian.sal.jira.lifecycle.JiraLifecycleManager.notifyOnStart(JiraLifecycleManager.java:67)
at com.atlassian.sal.core.lifecycle.DefaultLifecycleManager.start(DefaultLifecycleManager.java:50)
at com.atlassian.sal.jira.lifecycle.JiraLifecycleManager.onJiraStart(JiraLifecycleManager.java:61) <+3>
at java.lang.reflect.Method.invoke(Unknown Source)
at com.atlassian.event.internal.SingleParameterMethodListenerInvoker.invoke(SingleParameterMethodListenerInvoker.java:36)
at com.atlassian.event.internal.AsynchronousAbleEventDispatcher$2.run(AsynchronousAbleEventDispatcher.java:66)
at com.atlassian.event.internal.AsynchronousAbleEventDispatcher$1.execute(AsynchronousAbleEventDispatcher.java:32)
at com.atlassian.event.internal.AsynchronousAbleEventDispatcher.dispatch(AsynchronousAbleEventDispatcher.java:60)
at com.atlassian.event.internal.EventPublisherImpl.invokeListeners(EventPublisherImpl.java:160)
at com.atlassian.event.internal.EventPublisherImpl.publish(EventPublisherImpl.java:79)
at com.atlassian.plugin.event.impl.DefaultPluginEventManager.broadcast(DefaultPluginEventManager.java:84)
at com.atlassian.jira.upgrade.PluginUpgradeLauncher.start(PluginUpgradeLauncher.java:36)
at com.atlassian.jira.startup.DefaultJiraLauncher$3.run(DefaultJiraLauncher.java:119)
at com.atlassian.jira.config.database.DatabaseConfigurationManagerImpl.doNowOrEnqueue(DatabaseConfigurationManagerImpl.java:315)
at com.atlassian.jira.config.database.DatabaseConfigurationManagerImpl.doNowOrWhenDatabaseActivated(DatabaseConfigurationManagerImpl.java:209)
at com.atlassian.jira.startup.DefaultJiraLauncher.postDbLaunch(DefaultJiraLauncher.java:105)
at com.atlassian.jira.startup.DefaultJiraLauncher.access$100(DefaultJiraLauncher.java:30)
at com.atlassian.jira.startup.DefaultJiraLauncher$1.run(DefaultJiraLauncher.java:69)
at com.atlassian.jira.util.devspeed.JiraDevSpeedTimer.run(JiraDevSpeedTimer.java:33)
at com.atlassian.jira.startup.DefaultJiraLauncher.start(DefaultJiraLauncher.java:64)
at com.atlassian.jira.startup.LauncherContextListener.contextInitialized(LauncherContextListener.java:54) <+5> (StandardContext.java:4791) (StandardContext.java:5285) (LifecycleBase.java:150) (ContainerBase.java:1559) (ContainerBase.java:1549)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)