[INFO] Scanning for projects...
[INFO] Computing target platform for MavenProject: org.metaborg.dyl.paplj:paplj.full.eclipse:1.0.0 @ /Users/vladvergu/tud/slde/publications/declare-your-language/paplj/paplj.full.eclipse/pom.xml
[ERROR] Internal error: java.lang.IllegalArgumentException: Not an artifact file: /Users/vladvergu/tud/slde/publications/declare-your-language/paplj/paplj.full/target/classes -> [Help 1]
org.apache.maven.InternalErrorException: Internal error: java.lang.IllegalArgumentException: Not an artifact file: /Users/vladvergu/tud/slde/publications/declare-your-language/paplj/paplj.full/target/classes
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:167)
	at org.apache.maven.cli.MavenCli.execute(MavenCli.java:584)
	at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:216)
	at org.apache.maven.cli.MavenCli.main(MavenCli.java:160)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
	at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
	at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
	at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: java.lang.IllegalArgumentException: Not an artifact file: /Users/vladvergu/tud/slde/publications/declare-your-language/paplj/paplj.full/target/classes
	at org.eclipse.tycho.p2.target.TargetPlatformBundlePublisher.attemptToPublishBundle(TargetPlatformBundlePublisher.java:76)
	at org.eclipse.tycho.p2.target.PomDependencyCollectorImpl.publishAndAddArtifactIfBundleArtifact(PomDependencyCollectorImpl.java:61)
	at org.eclipse.tycho.p2.resolver.PomDependencyProcessor.collectPomDependencies(PomDependencyProcessor.java:92)
	at org.eclipse.tycho.p2.resolver.P2DependencyResolver.collectPomDependencies(P2DependencyResolver.java:295)
	at org.eclipse.tycho.p2.resolver.P2DependencyResolver.computePreliminaryTargetPlatform(P2DependencyResolver.java:204)
	at org.eclipse.tycho.core.resolver.DefaultTychoResolver.resolveProject(DefaultTychoResolver.java:109)
	at org.eclipse.tycho.core.maven.TychoMavenLifecycleParticipant.afterProjectsRead(TychoMavenLifecycleParticipant.java:95)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:318)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:155)
	... 11 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

Submitted by Vlad Vergu on 13 January 2016 at 11:03

Unfortunately this is a bug in Tycho that we cannot solve or work around.