title: Error while using Devloader for Tomcat 7
body: <p>I just followed <a href="http://docs.codehaus.org/display/TYNAMO/Developing+with+Tomcat+and+Eclipse" rel="nofollow">this</a> article, and am getting the following error. Googling hasnt helped so far. Please suggest:</p>
  
  <p>Nov 15, 2012 2:06:51 PM org.apache.catalina.core.AprLifecycleListener init
  INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: .:/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java
  Nov 15, 2012 2:06:51 PM org.apache.coyote.AbstractProtocol init
  INFO: Initializing ProtocolHandler ["http-bio-8080"]
  Nov 15, 2012 2:06:51 PM org.apache.coyote.AbstractProtocol init
  INFO: Initializing ProtocolHandler ["ajp-bio-8009"]
  Nov 15, 2012 2:06:51 PM org.apache.catalina.startup.Catalina load
  INFO: Initialization processed in 1569 ms
  Nov 15, 2012 2:06:52 PM org.apache.catalina.core.StandardService startInternal
  INFO: Starting service Catalina
  Nov 15, 2012 2:06:52 PM org.apache.catalina.core.StandardEngine startInternal
  INFO: Starting Servlet Engine: Apache Tomcat/7.0.32
  Nov 15, 2012 2:06:52 PM org.apache.catalina.startup.HostConfig deployDescriptor
  INFO: Deploying configuration descriptor /usr/local/apache-tomcat-7.0.32/conf/Catalina/localhost/MavenWeb.xml
  Nov 15, 2012 2:06:52 PM org.apache.tomcat.util.digester.Digester startElement
  SEVERE: Begin event threw error
  java.lang.VerifyError: class org.apache.catalina.loader.DevLoader overrides final method start.()V
      at java.lang.ClassLoader.defineClass1(Native Method)
      at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
      at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
      at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
      at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
      at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
      at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
      at org.apache.tomcat.util.digester.ObjectCreateRule.begin(ObjectCreateRule.java:144)
      at org.apache.tomcat.util.digester.Digester.startElement(Digester.java:1276)
      at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:501)
      at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:179)
      at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1343)
      at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2756)
      at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:647)
      at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)
      at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
      at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
      at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
      at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
      at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
      at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1537)
      at org.apache.catalina.startup.ContextConfig.processContextConfig(ContextConfig.java:635)
      at org.apache.catalina.startup.ContextConfig.contextConfig(ContextConfig.java:599)
      at org.apache.catalina.startup.ContextConfig.init(ContextConfig.java:837)
      at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:387)
      at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
      at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
      at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:401)
      at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:110)
      at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139)
      at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
      at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
      at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
      at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:655)
      at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1628)
      at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
      at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
      at java.util.concurrent.FutureTask.run(FutureTask.java:138)
      at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
      at java.lang.Thread.run(Thread.java:680)
  Nov 15, 2012 2:06:52 PM org.apache.catalina.startup.HostConfig deployDescriptor
  SEVERE: Error deploying configuration descriptor /usr/local/apache-tomcat-7.0.32/conf/Catalina/localhost/MavenWeb.xml
  java.lang.VerifyError: class org.apache.catalina.loader.DevLoader overrides final method start.()V
      at java.lang.ClassLoader.defineClass1(Native Method)
      at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
      at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
      at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
      at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
      at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
      at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
      at org.apache.tomcat.util.digester.ObjectCreateRule.begin(ObjectCreateRule.java:144)
      at org.apache.tomcat.util.digester.Digester.startElement(Digester.java:1276)
      at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:501)
      at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:179)
      at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1343)
      at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2756)
      at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:647)
      at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)
      at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
      at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
      at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
      at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
      at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
      at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1537)
      at org.apache.catalina.startup.ContextConfig.processContextConfig(ContextConfig.java:635)
      at org.apache.catalina.startup.ContextConfig.contextConfig(ContextConfig.java:599)
      at org.apache.catalina.startup.ContextConfig.init(ContextConfig.java:837)
      at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:387)
      at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
      at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
      at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:401)
      at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:110)
      at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139)
      at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
      at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
      at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
      at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:655)
      at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1628)
      at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
      at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
      at java.util.concurrent.FutureTask.run(FutureTask.java:138)
      at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
      at java.lang.Thread.run(Thread.java:680)
  Nov 15, 2012 2:06:52 PM org.apache.coyote.AbstractProtocol start
  INFO: Starting ProtocolHandler ["http-bio-8080"]
  Nov 15, 2012 2:06:52 PM org.apache.coyote.AbstractProtocol start
  INFO: Starting ProtocolHandler ["ajp-bio-8009"]
  Nov 15, 2012 2:06:52 PM org.apache.catalina.startup.Catalina start
  INFO: Server startup in 243 ms</p>