how to use JSPWiki 2.10.1

hello,
I want to test the JSPWiki ,I download the JSPWiki.war in http://mirrors.nxnethosting.com/apache/jspwiki/2.10.1/binaries/,but when I copy the war file to tomcat/webapps/ and started the service,one exception was happened. it said
SEVERE: The web application [/MyWiki] appears to have started a thread named [JSPWiki Lucene Indexer] but has failed to stop it. This is very likely to create a memory leak.
SEVERE: Exception during cleanup after start failed
java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
at java.util.HashMap$EntryIterator.next(Unknown Source)
at java.util.HashMap$EntryIterator.next(Unknown Source)
at java.util.HashMap.putAllForCreate(Unknown Source)
at java.util.HashMap.clone(Unknown Source)
at org.apache.catalina.loader.WebappClassLoader.clearReferencesStaticFin
al(WebappClassLoader.java:2022)
at org.apache.catalina.loader.WebappClassLoader.clearReferences(WebappCl
assLoader.java:1929)
at org.apache.catalina.loader.WebappClassLoader.stop(WebappClassLoader.j
ava:1833)
at org.apache.catalina.loader.WebappLoader.stop(WebappLoader.java:740)
at org.apache.catalina.core.StandardContext.stop(StandardContext.java:49
13)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4
749)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase
.java:799)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:77
9)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:601)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:943)
at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:778
)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:504
)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1315)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java
:324)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(Lifecycl
eSupport.java:142)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1061)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:840)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463
)
at org.apache.catalina.core.StandardService.start(StandardService.java:5
25)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:754
)
at org.apache.catalina.startup.Catalina.start(Catalina.java:595)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
I don't know the reason about that.I need help,
(I'm sorry to click close the issue ,so I send that again)