Failed while installing JPA 2.0.

java.lang.NullPointerException
	at org.eclipse.jpt.jpa.core.internal.facet.JpaFacetInstallDelegate.defaultResourceLocation(JpaFacetInstallDelegate.java:123)
	at org.eclipse.jpt.jpa.core.internal.facet.JpaFacetInstallDelegate.createPersistenceXml(JpaFacetInstallDelegate.java:107)
	at org.eclipse.jpt.jpa.core.internal.facet.JpaFacetInstallDelegate.createProjectXml(JpaFacetInstallDelegate.java:100)
	at org.eclipse.jpt.jpa.core.internal.facet.JpaFacetInstallDelegate.execute_(JpaFacetInstallDelegate.java:61)
	at org.eclipse.jpt.jpa.core.internal.facet.JpaFacetActionDelegate.execute(JpaFacetActionDelegate.java:35)
	at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.callDelegate(FacetedProject.java:1477)
	at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.modifyInternal(FacetedProject.java:441)
	at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.mergeChangesInternal(FacetedProject.java:1181)
	at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.access$2(FacetedProject.java:1117)
	at org.eclipse.wst.common.project.facet.core.internal.FacetedProject$1.run(FacetedProject.java:324)
	at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2313)
	at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.modify(FacetedProject.java:339)
	at org.eclipse.m2e.wtp.jpa.internal.configurators.JpaProjectConfigurator.configureFacets(JpaProjectConfigurator.java:154)
	at org.eclipse.m2e.wtp.jpa.internal.configurators.JpaProjectConfigurator.configure(JpaProjectConfigurator.java:109)
	at org.eclipse.m2e.core.project.configurator.AbstractLifecycleMapping.configure(AbstractLifecycleMapping.java:120)
	at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager$3.call(ProjectConfigurationManager.java:477)
	at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager$3.call(ProjectConfigurationManager.java:1)
	at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:166)
	at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:142)
	at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.updateProjectConfiguration(ProjectConfigurationManager.java:470)
	at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.updateProjectConfiguration0(ProjectConfigurationManager.java:408)
	at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager$2.call(ProjectConfigurationManager.java:321)
	at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager$2.call(ProjectConfigurationManager.java:1)
	at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:166)
	at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:142)
	at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:96)
	at org.eclipse.m2e.core.internal.embedder.MavenImpl.execute(MavenImpl.java:1344)
	at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.updateProjectConfiguration(ProjectConfigurationManager.java:318)
	at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.updateProjectConfiguration(ProjectConfigurationManager.java:304)
	at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.updateProjectConfiguration(ProjectConfigurationManager.java:286)
	at org.jboss.tools.maven.project.examples.xpl.UpdateMavenProjectJob.runInWorkspace(UpdateMavenProjectJob.java:112)
	at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

eclipse.buildId=4.4.0.I20140606-1215
java.version=1.8.0
java.vendor=Oracle Corporation
BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US
Framework arguments:  -product org.eclipse.epp.package.jee.product -product com.jboss.devstudio.core.product -showLocation -Dorg.jboss.tools.vpe.loadxulrunner=false 
Command-line arguments:  -os linux -ws gtk -arch x86_64 -product org.eclipse.epp.package.jee.product -product com.jboss.devstudio.core.product -clean -showLocation -data /home/nboldt/eclipse/workspace-clean44-2 -consolelog -console -debug -Dorg.jboss.tools.vpe.loadxulrunner=false