What I will do for the next release is test for this variable and if it is 
there, test for the class, and fail with a better error if not.

- Brett

On 9/15/05, Davy Toch <[EMAIL PROTECTED]> wrote:
> 
> Solution:
> 
> - point MAVEN_HOME to maven-1.1-beta2
> - modify PATH to point the 'bin' folder of Maven 1.1 beta 2
> 
> Remark : if you do the first, but not the second, then you'll get the
> error you indicated. What is confusing
> however, is that you see '1.1-beta-2' in the Maven logo, despite the
> fact that your configuration still
> partially points to Maven-1.0.2.
> 
> Michael Mattox wrote:
> 
> >I tried upgrading from 1.0.2 to 1.1-beta2 and I get an error right away.
> >Ie searched the mailing list and the compatability notes and don't see
> >anything about this error. nothing in JIRA either (close but not the
> >same). I've tested with JRockit and the SUN JDK, all JDK 1.5 and it
> >doesn't work. I've put Xerces 1.2.7 in jre/lib/endorsed in both and that
> >doesn't work either. I'm really stuck on this. If anyone has any ideas
> >I'd be grateful.
> >
> >[EMAIL PROTECTED] maven]$ maven -X clean
> > __ __
> >| \/ |__ _Apache__ ___
> >| |\/| / _` \ V / -_) ' \ ~ intelligent projects ~
> >|_| |_\__,_|\_/\___|_||_| v. 1.1-beta-2
> >
> >Initializing Plugins!
> >Set plugin source directory to /usr/local/maven-1.1-beta-2/plugins
> >Set unpacked plugin directory to /users/mmattox/.maven/cache
> >Set user plugin directory to /users/mmattox/.maven/plugins
> >Plugin cache will be regenerated
> >Now mapping cached plugins
> >Now loading uncached plugins
> >Loading plugin 'maven-nsis-plugin-1.1'
> >Using userBuildPropertiesFile: /users/mmattox/build.properties
> >Using projectPropertiesFile:
> >/users/mmattox/.maven/cache/maven-nsis-plugin-1.1/project.properties
> >Using projectBuildPropertiesFile:
> >/users/mmattox/.maven/cache/maven-nsis-plugin-1.1/build.properties
> >javax.xml.parsers.FactoryConfigurationError: Provider
> >org.apache.xerces.jaxp.SAXParserFactoryImpl could not be instantiated:
> >java.lang.NullPointerException
> > at
> >javax.xml.parsers.SAXParserFactory.newInstance(SAXParserFactory.java:113)
> > at
> >org.apache.maven.plugin.JellyScriptHousing.parse(JellyScriptHousing.java
> :152)
> > at
> >org.apache.maven.plugin.JellyScriptHousing.parse(JellyScriptHousing.java
> :177)
> > at
> >org.apache.maven.plugin.PluginManager.loadUncachedPlugins(
> PluginManager.java:238)
> > at
> >org.apache.maven.plugin.PluginManager.initialize(PluginManager.java:303)
> > at
> >org.apache.maven.MavenSession.initializePluginManager(MavenSession.java
> :204)
> > at org.apache.maven.MavenSession.initialize(MavenSession.java:171)
> > at org.apache.maven.cli.App.doMain(App.java:498)
> > at org.apache.maven.cli.App.main(App.java:1258)
> > at
> >jrockit.reflect.InitialMethodInvoker.invoke(Ljava.lang.Object;[
> Ljava.lang.Object;)Ljava.lang.Object;(Unknown
> >Source)
> > at
> >java.lang.reflect.Method.invoke(Ljava.lang.Object;[Ljava.lang.Object
> ;I)Ljava.lang.Object;(Unknown
> >Source)
> > at com.werken.forehead.Forehead.run(Forehead.java:551)
> > at com.werken.forehead.Forehead.main(Forehead.java:581)
> >
> >Vous avez rencontré une erreur inconnue en exécutant Maven.
> >Svp aidez-nous à corriger ce problème en suivant ces étapes :
> >- lisez la FAQ de Maven à http://maven.apache.org/faq.html
> >- exécutez la même commande avec le paramètre '-e', par exemple 'maven -e
> >jar'
> >- recherchez l'erreur dans les archives à
> >http://www.mail-archive.com/[email protected]
> >- poster la sortie de maven -e sur JIRA à ???issueTrackingUrl??? (vous
> >devez vous enregistez d'abord)
> >- exécutez 'maven --info' et poster la sortie ainsi que l'environment 
> pour
> >le bug ci-dessus
> >
> >Mémoire Finale : 5M/64M
> >Temps total : 0 secondes
> >Fini le : mercredi 14 septembre 2005 18:06:37 CEST
> >
> >[EMAIL PROTECTED] maven]$
> >
> >
> >
> >
> >
> >
> 
> 
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