[opencms-dev] Upgrade from 9.0 to 9.5, exception in step 5: update modules

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Hi there,

in step 5 I get the following exception:

17 Dez 2014 16:24:14,052 ERROR [rg.opencms.setup.CmsUpdateBean: 556]
org/apache/xml/resolver/readers/CatalogReader
java.lang.NoClassDefFoundError:
org/apache/xml/resolver/readers/CatalogReader
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:190)
	at org.opencms.setup.CmsUpdateBean.preload(CmsUpdateBean.java:552)
	at org.opencms.setup.CmsUpdateBean.preload(CmsUpdateBean.java:530)
	at
org.opencms.setup.CmsUpdateBean.prepareUpdateStep5(CmsUpdateBean.java:646)
	at
org.apache.jsp.update.step_005f5_005fupdate_005fmodules_jsp._jspService(step_005f5_005fupdate_005fmodules_jsp.java:73)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
	at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
	at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
	at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
	at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
	at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
	at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
	at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
	at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
	at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
	at org.apache.coyote.ajp.AjpAprProcessor.process(AjpAprProcessor.java:197)
	at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
	at
org.apache.tomcat.util.net.AprEndpoint$SocketWithOptionsProcessor.run(AprEndpoint.java:1810)
	at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.ClassNotFoundException:
org.apache.xml.resolver.readers.CatalogReader
	at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714)
	at
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
	... 28 more


Any ideas?
In which lib is this class to be found and why is it missing?

Thanx a lot for hints and solutions :)

Kind regards, Bernd