<strong>
<p>When some people have tried to install loginapp4, they ran into some issues. Tomcat itself threw an exception while loading the context for loginapp4. 

<p>See if you can comment out the following line in aspire.properties

<pre>
aspire.systemProperties
</pre>

<p>use a # at the begining
</strong>

<p>The trace of tomcat may look like the following

<pre>
Jul 11, 2006 3:27:40 PM org.apache.catalina.startup.HostConfig
deployDescriptor

SEVERE: Error deploying configuration descriptor manager.xml

javax.xml.parsers.FactoryConfigurationError: Provider
org.apache.xerces.jaxp.SAXParserFactoryImpl could not be instantiated:
java.lang.NullPointerException

       at javax.xml.parsers.SAXParserFactory.newInstance(Unknown Source)

       at org.apache.tomcat.util.digester.Digester.getFactory(Digester.java:486)

       at org.apache.tomcat.util.digester.Digester.getParser(Digester.java:691)

       at org.apache.tomcat.util.digester.Digester.getXMLReader(Digester.java:899)

       at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1545)

       at
org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:561)

       at
org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:535)

       at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:470)

       at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1106)

       at
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:310)

       at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)

       at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1019)

       at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)

       at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1011)

       at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:440)

       at org.apache.catalina.core.StandardService.start(StandardService.java:450)

       at org.apache.catalina.core.StandardServer.start(StandardServer.java:683)

       at org.apache.catalina.startup.Catalina.start(Catalina.java:537)

       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:271)

       at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:409)

Jul 11, 2006 3:27:40 PM org.apache.coyote.http11.Http11Protocol start

INFO: Starting Coyote HTTP/1.1 on http-8080

Jul 11, 2006 3:27:40 PM org.apache.coyote.http11.Http11Protocol start

INFO: Starting Coyote HTTP/1.1 on http-8443

java.lang.reflect.InvocationTargetException

       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:271)

       at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:409)

Caused by: javax.xml.parsers.FactoryConfigurationError: Provider
org.apache.xerces.jaxp.DocumentBuilderFactoryImpl could not be
instantiated: java.lang.NullPointerException

       at javax.xml.parsers.DocumentBuilderFactory.newInstance(Unknown Source)

       at org.apache.commons.modeler.util.DomUtil.readXml(DomUtil.java:284)

       at
org.apache.commons.modeler.modules.MbeansDescriptorsDOMSource.execute(MbeansDescriptorsDOMSource.java:130)

       at
org.apache.commons.modeler.modules.MbeansDescriptorsDOMSource.loadDescriptors(MbeansDescriptorsDOMSource.java:120)

       at org.apache.commons.modeler.Registry.load(Registry.java:819)

       at org.apache.commons.modeler.Registry.loadDescriptors(Registry.java:931)

       at org.apache.commons.modeler.Registry.loadDescriptors(Registry.java:909)

       at org.apache.commons.modeler.Registry.findDescriptor(Registry.java:992)

       at org.apache.commons.modeler.Registry.findManagedBean(Registry.java:696)

       at org.apache.commons.modeler.Registry.findManagedBean(Registry.java:1047)

       at org.apache.commons.modeler.Registry.registerComponent(Registry.java:859)

       at org.apache.commons.modeler.Registry.registerComponent(Registry.java:346)

       at org.apache.catalina.connector.Connector.start(Connector.java:977)

       at org.apache.catalina.core.StandardService.start(StandardService.java:459)

       at org.apache.catalina.core.StandardServer.start(StandardServer.java:683)

       at org.apache.catalina.startup.Catalina.start(Catalina.java:537)

       ... 6 more
</pre>