Just tried switching to 0.17.0 but its complaining about maven-osgi-test-plugin! 
 
 
 
 [ERROR] Internal error: java.lang.RuntimeException: org.apache.maven.MavenExecutionException: Could not setup plugin ClassRealm: Plugin org.sonatype.tycho:maven-osgi-test-plugin:0.17.0 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.sonatype.tycho:maven-osgi-test-plugin:jar:0.17.0: Failure to find org.sonatype.tycho:maven-osgi-test-plugin:pom:0.17.0 in http://repo1.maven.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced -> [Help 1]
org.apache.maven.InternalErrorException: Internal error: java.lang.RuntimeException: org.apache.maven.MavenExecutionException: Could not setup plugin ClassRealm
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:168)
	at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
	at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
	at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
	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:597)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
	at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
	at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: java.lang.RuntimeException: org.apache.maven.MavenExecutionException: Could not setup plugin ClassRealm
	at org.eclipse.tycho.p2.resolver.P2TargetPlatformResolver.getDependencyMetadata(P2TargetPlatformResolver.java:164)
	at org.eclipse.tycho.p2.resolver.P2TargetPlatformResolver.setupProjects(P2TargetPlatformResolver.java:126)
	at org.eclipse.tycho.core.resolver.DefaultTychoDependencyResolver.setupProject(DefaultTychoDependencyResolver.java:87)
	at org.eclipse.tycho.core.maven.TychoMavenLifecycleParticipant.afterProjectsRead(TychoMavenLifecycleParticipant.java:77)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:273)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
	... 11 more
Caused by: org.apache.maven.MavenExecutionException: Could not setup plugin ClassRealm
	at org.eclipse.tycho.core.maven.utils.PluginRealmHelper.newMavenExecutionException(PluginRealmHelper.java:142)
	at org.eclipse.tycho.core.maven.utils.PluginRealmHelper.execute(PluginRealmHelper.java:129)
	at org.eclipse.tycho.p2.resolver.P2TargetPlatformResolver.getDependencyMetadata(P2TargetPlatformResolver.java:144)
	... 16 more
Caused by: org.apache.maven.plugin.PluginResolutionException: Plugin org.sonatype.tycho:maven-osgi-test-plugin:0.17.0 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.sonatype.tycho:maven-osgi-test-plugin:jar:0.17.0
	at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:129)
	at org.apache.maven.plugin.internal.DefaultMavenPluginManager.getPluginDescriptor(DefaultMavenPluginManager.java:142)
	at org.eclipse.tycho.core.maven.utils.PluginRealmHelper.execute(PluginRealmHelper.java:92)
	... 17 more
Caused by: org.sonatype.aether.resolution.ArtifactDescriptorException: Failed to read artifact descriptor for org.sonatype.tycho:maven-osgi-test-plugin:jar:0.17.0
	at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:282)
	at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor(DefaultArtifactDescriptorReader.java:172)
	at org.sonatype.aether.impl.internal.DefaultRepositorySystem.readArtifactDescriptor(DefaultRepositorySystem.java:316)
	at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:115)
	... 19 more
Caused by: org.sonatype.aether.resolution.ArtifactResolutionException: Failure to find org.sonatype.tycho:maven-osgi-test-plugin:pom:0.17.0 in http://repo1.maven.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced
	at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:541)
	at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:220)
	at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:197)
	at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:267)
	... 22 more
Caused by: org.sonatype.aether.transfer.ArtifactNotFoundException: Failure to find org.sonatype.tycho:maven-osgi-test-plugin:pom:0.17.0 in http://repo1.maven.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced
	at org.sonatype.aether.impl.internal.DefaultUpdateCheckManager.checkArtifact(DefaultUpdateCheckManager.java:190)
	at org.sonatype.aether.impl.internal.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:430)
	... 25 more
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/InternalErrorException
[DEBUG] Waiting for process to finish
[DEBUG] Result: 1 
 
 
 Jeff, 
 
 Unfortunately that didn't do the trick - same situation. I'll see if I can use 0.17.0 but that's a brave change a week before a planned release! 
 
 Regards, Justin 
 
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