Example exception from license-maven-plugin 1.0

gistfile1.txt

[WARNING] skip failed file : Could not extract header on file /Users/curtis/code/ImageJ/imagej/core/ext/src/test/java/imagej/ext/plugin/PluginDiscovery.java for reason copyright [Copyright (C) 2009 - 2012 Board of Regents of the University of
Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck
Institute of Molecular Cell Biology and Genetics.] is not valid
org.codehaus.mojo.license.header.InvalideFileHeaderException: Could not extract header on file /Users/curtis/code/ImageJ/imagej/core/ext/src/test/java/imagej/ext/plugin/PluginDiscovery.java for reason copyright [Copyright (C) 2009 - 2012 Board of Regents of the University of
Wisconsin-Madison, Broad Institute of MIT and Harvard, and Max Planck
Institute of Molecular Cell Biology and Genetics.] is not valid
	at org.codehaus.mojo.license.UpdateFileHeaderMojo.processFile(UpdateFileHeaderMojo.java:776)
	at org.codehaus.mojo.license.UpdateFileHeaderMojo.prepareProcessFile(UpdateFileHeaderMojo.java:689)
	at org.codehaus.mojo.license.UpdateFileHeaderMojo.processCommentStyle(UpdateFileHeaderMojo.java:668)
	at org.codehaus.mojo.license.UpdateFileHeaderMojo.doAction(UpdateFileHeaderMojo.java:596)
	at org.codehaus.mojo.license.AbstractLicenseMojo.execute(AbstractLicenseMojo.java:186)
	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)
	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
	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)