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http://jira.codehaus.org/browse/MNG-2923?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=145507#action_145507
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David Greenberg commented on MNG-2923:
--------------------------------------

I am a beginner with Maven, and am getting this issue with Maven 2.0.9.  What's 
weird is that I didn't have this issue for the few months that I have been 
using this configuration, and suddenly it broke today.  Is there an easy way to 
tell which dependency it is breaking on?  I have a lot of dependencies in my 
pom.

> Having any active profiles causes the build to fail
> ---------------------------------------------------
>
>                 Key: MNG-2923
>                 URL: http://jira.codehaus.org/browse/MNG-2923
>             Project: Maven 2
>          Issue Type: Bug
>          Components: Dependencies
>    Affects Versions: 2.0.6
>            Reporter: Matthew Beermann
>             Fix For: 2.0.7
>
>         Attachments: MNG-2923-maven-artifact.patch, pom.xml
>
>
> (This seems to be a regression in 2.0.6, and does not occur in 2.0.5.) If I 
> have any active profiles when building certain projects in Maven 2.0.6, the 
> build will fail. For example, adding something as simple as:
> <profiles>
>     <profile>
>         <id>foo</id>
>         <activation>
>             <activeByDefault>true</activeByDefault>
>         </activation>
>     </profile>
> </profiles>
> ...to my ~/.m2/settings.xml file will cause the stack trace below, but the 
> build will succeed once I remove it. I'm attaching  my POM for reference.
> [INFO] 
> ------------------------------------------------------------------------
> [ERROR] FATAL ERROR
> [INFO] 
> ------------------------------------------------------------------------
> [INFO] null
> [INFO] 
> ------------------------------------------------------------------------
> [INFO] Trace
> java.lang.NullPointerException
>         at 
> org.apache.maven.artifact.resolver.DefaultArtifactCollector.recurse(DefaultArtifactCollector.java:164)
>         at 
> org.apache.maven.artifact.resolver.DefaultArtifactCollector.recurse(DefaultArtifactCollector.java:334)
>         at 
> org.apache.maven.artifact.resolver.DefaultArtifactCollector.recurse(DefaultArtifactCollector.java:334)
>         at 
> org.apache.maven.artifact.resolver.DefaultArtifactCollector.collect(DefaultArtifactCollector.java:75)
>         at 
> org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTransitively(DefaultArtifactResolver.java:284)
>         at 
> org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolveTransitively(DefaultArtifactResolver.java:272)
>         at 
> org.apache.maven.plugin.DefaultPluginManager.resolveTransitiveDependencies(DefaultPluginManager.java:1238)
>         at 
> org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:397)
>         at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:539)
>         at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:480)
>         at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:459)
>         at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:311)
>         at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:278)
>         at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:143)
>         at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:334)
>         at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:125)
>         at org.apache.maven.cli.MavenCli.main(MavenCli.java:272)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>         at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:585)
>         at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
>         at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
>         at 
> org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
>         at org.codehaus.classworlds.Launcher.main(Launcher.java:375)

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