I have  used  apt-get  upgrade  only.
During  updating  i  have  checked   to  don't  replace  some config
file.  May  be  is  is  a problem.
But  I  didn't  upload  any  files  by  hand.
On 09.02.17 10:53, Vincent Massol wrote:
   On 8 Feb 2017,
at 21:35, Ligth <ya.est.svet(a)yandex.ru> wrote:
 Yes,    that  issue was  created by  me.
 We  have  fixed  the  problem.  We  have  removed  all  doubled files like
xwiki-platform-activeinstalls-common-8.1.jar *8.1.jar  in  /usr/lib/xwiki/WEB-INF/lib/
dir. 
 Now we need to understand why you had duplicated JARs with different version.
Is that something you did manually?
 If you used apt upgrade it shouldn’t have done this (unless there’s a big bug!).
 Please let us know so that we can fix something if there’s something to fix.
 Thanks
 -Vincent
> On 08.02.17 21:48, Vincent Massol wrote:
>> Hi,
>>
>> I don’t know if it was you but this was also raised in jira at
>> 
https://jira.xwiki.org/browse/XE-1610
>>
>> I don’t know the answer as this stage but it looks very weird. I’m sure someone
will provide a solution by tomorrow EOD.
>>
>> Thanks
>> -Vincent
>>
>>> On 8 Feb 2017, at 18:42, Ligth <ya.est.svet(a)yandex.ru> wrote:
>>>
>>> Hi.
>>>
>>>
>>> We  have upgraded  xwiki  enterprise   from  8  to  9.0 versionb  on  debian:
>>>
>>> apt-get  update &&  apt-get  upgrade
>>>
>>> # dpkg -l | grep xwiki
>>> ii  xwiki-enterprise-common         9.0+3
>>> ii  xwiki-enterprise-pgsql-common   9.0+3
>>> ii  xwiki-enterprise-tomcat8-common 9.0+3
>>> ii  xwiki-enterprise-tomcat8-pgsql  9.0+3
>>>
>>>
>>> And  now  we  can't  get  started  xwiki.  The  following  error is
received:
>>>
>>> SEVERE: Exception sending context initialized event to listener instance of
class org.xwiki.container.servlet.XWikiServletContextListener
>>> java.lang.NoClassDefFoundError: Failed to get fields for class
[org.xwiki.activeinstalls.internal.client.DefaultPingSender] because the class
[io/searchbox/Action] couldn't be found in the ClassLoader.
>>>         at
org.xwiki.component.util.ReflectionUtils.getAllFields(ReflectionUtils.java:72)
>>>         at
org.xwiki.component.annotation.ComponentDescriptorFactory.createComponentDescriptor(ComponentDescriptorFactory.java:132)
>>>         at
org.xwiki.component.annotation.ComponentDescriptorFactory.createComponentDescriptors(ComponentDescriptorFactory.java:105)
>>>         at
org.xwiki.component.annotation.ComponentAnnotationLoader.register(ComponentAnnotationLoader.java:168)
>>>         at
org.xwiki.component.annotation.ComponentAnnotationLoader.initialize(ComponentAnnotationLoader.java:136)
>>>         at
org.xwiki.component.annotation.ComponentAnnotationLoader.initialize(ComponentAnnotationLoader.java:118)
>>>         at
org.xwiki.component.embed.EmbeddableComponentManager.initialize(EmbeddableComponentManager.java:151)
>>>         at
org.xwiki.container.servlet.XWikiServletContextListener.contextInitialized(XWikiServletContextListener.java:61)
>>>         at
org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4832)
>>>         at
org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5256)
>>>         at
org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
>>>         at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:724)
>>>         at
org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:700)
>>>         at
org.apache.catalina.core.StandardHost.addChild(StandardHost.java:714)
>>>         at
org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:581)
>>>         at
org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1685)
>>>         at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
>>>         at java.util.concurrent.FutureTask.run(FutureTask.java:266)
>>>         at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>>>         at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>>>         at java.lang.Thread.run(Thread.java:745)
>>>
>>> фев 08, 2017 6:03:35 PM org.apache.catalina.core.StandardContext
startInternal
>>> SEVERE: Error listenerStart
>>>
>>>
>>> Can  someone   help ?
>>>
>>>
>>>