class cast exception when viewing users in groups and Userlister macro throws ClassCastException when using osuser for user management.

2008-02-05 10:42:14,260 ERROR [http-8080-Processor3] [renderer.v2.components.MacroRendererComponent] processMacro Unexpected error formatting macro: userlister
 -- url: /dwr/exec/WysiwygConverter.convertToPreview.dwr | userName: admin
java.lang.ClassCastException: java.lang.String
	at com.atlassian.user.search.EntityNameAlphaComparator.compare(EntityNameAlphaComparator.java:29)
	at java.util.TreeMap.compare(TreeMap.java:1093)
	at java.util.TreeMap.put(TreeMap.java:465)
	at java.util.TreeSet.add(TreeSet.java:210)
	at com.atlassian.user.impl.osuser.OSUGroupManager.getMemberNames(OSUGroupManager.java:155)
	at com.atlassian.user.impl.delegation.DelegatingGroupManagerTemplate.getMemberNames(DelegatingGroupManagerTemplate.java:81)
	at bucket.user.DefaultUserAccessor.getMemberNames(DefaultUserAccessor.java:580)
	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:585)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:296)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:177)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:144)
	at com.atlassian.spring.interceptors.SpringProfilingInterceptor.invoke(SpringProfilingInterceptor.java:20)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:107)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at $Proxy26.getMemberNames(Unknown Source)
	at com.atlassian.confluence.extra.userlister.model.UserList.getUsersByGroup(UserList.java:91)
	at com.atlassian.confluence.extra.userlister.model.UserList.build(UserList.java:41)
	at com.atlassian.confluence.extra.userlister.UserLister.execute(UserLister.java:91)
	at com.atlassian.renderer.v2.macro.ResourceAwareMacroDecorator.execute(ResourceAwareMacroDecorator.java:45)
	at com.atlassian.renderer.v2.components.MacroRendererComponent.processMacro(MacroRendererComponent.java:254)
	at com.atlassian.renderer.v2.components.MacroRendererComponent.makeMacro(MacroRendererComponent.java:150)
	at com.atlassian.renderer.v2.components.WikiContentRendererHandler.handleMacro(WikiContentRendererHandler.java:18)
	at com.atlassian.renderer.v2.WikiMarkupParser.makeMacro(WikiMarkupParser.java:126)
	at com.atlassian.renderer.v2.WikiMarkupParser.makeMacro(WikiMarkupParser.java:114)
	at com.atlassian.renderer.v2.WikiMarkupParser.handlePotentialMacro(WikiMarkupParser.java:99)
	at com.atlassian.renderer.v2.WikiMarkupParser.parse(WikiMarkupParser.java:60)
	at com.atlassian.renderer.v2.components.MacroRendererComponent.render(MacroRendererComponent.java:46)
	at com.atlassian.renderer.v2.V2Renderer.render(V2Renderer.java:53)
	at com.atlassian.renderer.v2.V2RendererFacade.convertWikiToXHtml(V2RendererFacade.java:57)
	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:585)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:296)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:177)