I can't think of anything obvious and never saw anything like that
before. Also, there is no significant changes in the latest dev build,
so there should not be no differences between dev and last release. Are
you installing it using Eclipse update manager? Try to skip all optional
features and see if that would help.
BTW, are you running Eclipse with Java 1.5? What version? Can you
please attach your Eclipse configuration details from Help / About
Eclipse SDK / Configuration Details.
If there is nothing in Eclipse error log, you can try to run Eclipse
with console and see if there is any exceptions, e.g. on windows specify
java.exe instead of javaw.exe in eclipse.ini. Something like this:
---
-vm
C:\jdk1.6.0\bin\java.exe
-vmargs
-Xms90m
-Xmx600m
-XX:MaxPermSize=120m
-XX:MaxNewSize=40m
---
regards,
Eugene
Michael Hüttermann wrote:
Thanks! I now removed the installed m2eclipse-release and added the
current stable dev-version. Then I re-started the IDE a couple of times.
Now there is no eclipse log entry (good!), starting of IDE goes well, but
the M2 classpath container is still not available/visible (bad!). If I
trigger a "maven clean" via IDE context menu I get an exception on the
console, see below. The POM editor is up and running. Do you have any hint
what is going wrong? It is not necessary for me to start maven phases via
m2eclipse, but I definitely need the dependency resolution. It is pretty
bad not being able to use m2eclipse at all. :-(( Thanks!!!!
org.apache.maven.artifact.UnknownRepositoryLayoutException: Cannot find
ArtifactRepositoryLayout instance for:
at
org.apache.maven.artifact.repository.DefaultArtifactRepositoryFactory.checkLayout(DefaultArtifactRepositoryFactory.java:75)
at
org.apache.maven.artifact.repository.DefaultArtifactRepositoryFactory.createArtifactRepository(DefaultArtifactRepositoryFactory.java:96)
at
org.apache.maven.DefaultMavenTools.buildArtifactRepository(DefaultMavenTools.java:104)
at
org.apache.maven.DefaultMavenTools.buildArtifactRepositories(DefaultMavenTools.java:55)
at
org.apache.maven.project.DefaultMavenProjectBuilder.processProjectLogic(DefaultMavenProjectBuilder.java:1064)
at
org.apache.maven.project.DefaultMavenProjectBuilder.buildInternal(DefaultMavenProjectBuilder.java:812)
at
org.apache.maven.project.DefaultMavenProjectBuilder.buildFromSourceFileInternal(DefaultMavenProjectBuilder.java:504)
at
org.apache.maven.project.DefaultMavenProjectBuilder.build(DefaultMavenProjectBuilder.java:200)
at
org.apache.maven.DefaultMaven.build_aroundBody2(DefaultMaven.java:312)
at
org.apache.maven.DefaultMaven.build_aroundBody3$advice(DefaultMaven.java:447)
at org.apache.maven.DefaultMaven.collectProjects(DefaultMaven.java:312)
at org.apache.maven.DefaultMaven.getProjects(DefaultMaven.java:282)
at
org.apache.maven.DefaultMaven.createReactorManager(DefaultMaven.java:103)
at
org.apache.maven.DefaultMaven.execute_aroundBody0(DefaultMaven.java:160)
at
org.apache.maven.DefaultMaven.execute_aroundBody1$advice(DefaultMaven.java:304)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:1)
at
org.apache.maven.embedder.MavenEmbedder.execute_aroundBody2(MavenEmbedder.java:904)
at
org.apache.maven.embedder.MavenEmbedder.execute_aroundBody3$advice(MavenEmbedder.java:304)
at org.apache.maven.embedder.MavenEmbedder.execute(MavenEmbedder.java:1)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:176)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:63)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:52)
[INFO] Scanning for projects...
[INFO]
------------------------------------------------------------------------
[INFO] Building Unnamed - de.xxx:jar:1.0-SNAPSHOT
[INFO]
[INFO] Id: de.xxx:jar:1.0-SNAPSHOT
[INFO] task-segment: [clean]
[INFO]
------------------------------------------------------------------------
Exception in thread "main" java.lang.NullPointerException
at java.util.ArrayList.addAll(ArrayList.java:499)
at
org.apache.maven.plugin.DefaultPluginManagerSupport.resolvePluginArtifact(DefaultPluginManagerSupport.java:76)
at
org.apache.maven.plugin.DefaultPluginManager.verifyVersionedPlugin(DefaultPluginManager.java:209)
at
org.apache.maven.plugin.DefaultPluginManager.verifyPlugin(DefaultPluginManager.java:186)
at
org.apache.maven.plugin.loader.DefaultPluginLoader.loadPlugin(DefaultPluginLoader.java:79)
at
org.apache.maven.plugin.loader.DefaultPluginLoader.loadPlugin(DefaultPluginLoader.java:52)
at
org.apache.maven.lifecycle.plan.DefaultBuildPlanner.loadPluginDescriptor(DefaultBuildPlanner.java:322)
at
org.apache.maven.lifecycle.plan.DefaultBuildPlanner.findForkModifiers(DefaultBuildPlanner.java:192)
at
org.apache.maven.lifecycle.plan.DefaultBuildPlanner.addForkedLifecycleModifiers(DefaultBuildPlanner.java:179)
at
org.apache.maven.lifecycle.plan.DefaultBuildPlanner.constructBuildPlan_aroundBody0(DefaultBuildPlanner.java:117)
at
org.apache.maven.lifecycle.plan.DefaultBuildPlanner.constructBuildPlan_aroundBody1$advice(DefaultBuildPlanner.java:403)
at
org.apache.maven.lifecycle.plan.DefaultBuildPlanner.constructBuildPlan(DefaultBuildPlanner.java:1)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.getLifecycleBindings(DefaultLifecycleExecutor.java:400)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegmentForProject(DefaultLifecycleExecutor.java:235)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:191)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:149)
at
org.apache.maven.DefaultMaven.execute_aroundBody0(DefaultMaven.java:223)
at
org.apache.maven.DefaultMaven.execute_aroundBody1$advice(DefaultMaven.java:304)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:1)
at
org.apache.maven.embedder.MavenEmbedder.execute_aroundBody2(MavenEmbedder.java:904)
at
org.apache.maven.embedder.MavenEmbedder.execute_aroundBody3$advice(MavenEmbedder.java:304)
at org.apache.maven.embedder.MavenEmbedder.execute(MavenEmbedder.java:1)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:176)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:63)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:52)
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