GH 6.0.3 upgrade causes exception

2012-09-19 13:57:45,885 Spring executor 16 ERROR admin 835x228x1 zk0tc7 127.0.0.1 /rest/plugins/1.0/ [greenhopper.plugin.sampledata.JiraImportersPluginInstallerImpl] Duplicate plugin found (installed version is the same or older) and could not be unloaded: 'com.atlassian.jira.plugins.jira-importers-plugin'
com.atlassian.plugin.PluginParseException: Duplicate plugin found (installed version is the same or older) and could not be unloaded: 'com.atlassian.jira.plugins.jira-importers-plugin'
	at com.atlassian.plugin.manager.DefaultPluginManager.addPlugins(DefaultPluginManager.java:691)
	at com.atlassian.plugin.manager.DefaultPluginManager.scanForNewPlugins(DefaultPluginManager.java:459)
Caused by: com.atlassian.plugin.PluginException: Cannot remove an enabled plugin
	at com.atlassian.plugin.loaders.ScanningPluginLoader.removePlugin(ScanningPluginLoader.java:198)
	at com.atlassian.plugin.manager.DefaultPluginManager.removePluginFromLoader(DefaultPluginManager.java:619)

2012-09-19 13:57:45,905 Spring executor 16 WARN admin 835x228x1 zk0tc7 127.0.0.1 /rest/plugins/1.0/ [com.atlassian.greenhopper.Launcher] Could not install jira importers plugin at minimum version
ErrorCollection[errors=[ErrorCollection.ErrorItem[contextId=<null>,messageKey=gh.sampledata.could.not.install.jim,params={},type=error]],reasons=[SERVER_ERROR]]

2012-09-19 13:57:46,851 pool-3-thread-1 ERROR admin 835x228x1 zk0tc7 127.0.0.1 /rest/plugins/1.0/ [atlassian.plugin.manager.DefaultPluginManager] There was an error loading the descriptor 'Bug Import Id' of plugin 'com.atlassian.jira.plugins.jira-importers-plugin'. Disabling.
java.lang.IllegalStateException: No implementation has been registered for this tenant, and there's no creator to create it
	at com.atlassian.multitenant.impl.MultiTenantComponentMapImpl.get(MultiTenantComponentMapImpl.java:118)
	at com.atlassian.multitenant.impl.MultiTenantComponentMapImpl.get(MultiTenantComponentMapImpl.java:89)

2012-09-19 13:57:46,985 pool-3-thread-1 ERROR admin 835x228x1 zk0tc7 127.0.0.1 /rest/plugins/1.0/ [com.atlassian.upm.PluginInstaller] Failed to install plugin
java.lang.IllegalStateException: No implementation has been registered for this tenant, and there's no creator to create it
	at com.atlassian.multitenant.impl.MultiTenantComponentMapImpl.get(MultiTenantComponentMapImpl.java:118)
	at com.atlassian.multitenant.impl.MultiTenantComponentMapImpl.get(MultiTenantComponentMapImpl.java:89)

2012-09-19 13:57:47,023 pool-3-thread-1 WARN admin 835x228x1 zk0tc7 127.0.0.1 /rest/plugins/1.0/ [rest.resources.install.InstallTask] Unexpected error in install task
java.lang.RuntimeException: java.lang.IllegalStateException: No implementation has been registered for this tenant, and there's no creator to create it
	at com.atlassian.upm.PluginInstaller.execute(PluginInstaller.java:166)
	at com.atlassian.upm.PluginInstaller.install(PluginInstaller.java:81)
Caused by: java.lang.IllegalStateException: No implementation has been registered for this tenant, and there's no creator to create it
	at com.atlassian.multitenant.impl.MultiTenantComponentMapImpl.get(MultiTenantComponentMapImpl.java:118)
	at com.atlassian.multitenant.impl.MultiTenantComponentMapImpl.get(MultiTenantComponentMapImpl.java:89)

2012-09-19 14:15:25,311 http-8080-1 ERROR admin 855x1249x1 zk0tc7 127.0.0.1 /secure/admin/WebSudoAuthenticate!default.jspa [jira.web.dispatcher.JiraWebworkActionDispatcher] Exception thrown from action 'WebSudoAuthenticate!default', returning 404 
java.lang.IllegalStateException: Method invoked on module descriptor after it was destroyed. This is only legal for some methods on AbstractModuleDescriptor.
	at com.atlassian.multitenant.plugins.MultiTenantModuleDescriptorFactory$LifecycleInterceptor$TenantInterceptor.intercept(MultiTenantModuleDescriptorFactory.java:342)
	at com.atlassian.jira.plugin.webwork.WebworkModuleDescriptor$$EnhancerByCGLIB$$c9708a51.getImpl(<generated>)
	at webwork.config.DelegatingConfiguration.getImpl(DelegatingConfiguration.java:50)

2012-09-19 14:15:29,860 http-8080-1 ERROR admin 855x1251x1 zk0tc7 127.0.0.1 /secure/admin/WebSudoAuthenticate!default.jspa [jira.web.dispatcher.JiraWebworkActionDispatcher] Exception thrown from action 'WebSudoAuthenticate!default', returning 404 
java.lang.IllegalStateException: Method invoked on module descriptor after it was destroyed. This is only legal for some methods on AbstractModuleDescriptor.
	at com.atlassian.multitenant.plugins.MultiTenantModuleDescriptorFactory$LifecycleInterceptor$TenantInterceptor.intercept(MultiTenantModuleDescriptorFactory.java:342)
	at com.atlassian.jira.plugin.webwork.WebworkModuleDescriptor$$EnhancerByCGLIB$$c9708a51.getImpl(<generated>)
	at webwork.config.DelegatingConfiguration.getImpl(DelegatingConfiguration.java:50)

2012-09-19 14:15:35,049 http-8080-1 ERROR admin 855x1253x1 zk0tc7 127.0.0.1 /secure/MyJiraHome.jspa [jira.web.dispatcher.JiraWebworkActionDispatcher] Exception thrown from action 'MyJiraHome', returning 404 
java.lang.IllegalStateException: Method invoked on module descriptor after it was destroyed. This is only legal for some methods on AbstractModuleDescriptor.
	at com.atlassian.multitenant.plugins.MultiTenantModuleDescriptorFactory$LifecycleInterceptor$TenantInterceptor.intercept(MultiTenantModuleDescriptorFactory.java:342)
	at com.atlassian.jira.plugin.webwork.WebworkModuleDescriptor$$EnhancerByCGLIB$$c9708a51.getImpl(<generated>)
	at webwork.config.DelegatingConfiguration.getImpl(DelegatingConfiguration.java:50)