java.lang.NullPointerException
at org.jboss.tools.maven.seam.MavenSeamActivator.configureParentProject(MavenSeamActivator.java:839)
at org.jboss.tools.maven.seam.MavenSeamActivator.configureSeamProject(MavenSeamActivator.java:161)
at org.jboss.tools.maven.seam.internal.project.facet.MavenPostInstallListener.handleEvent(MavenPostInstallListener.java:58)
at org.eclipse.wst.common.project.facet.core.events.internal.DelayedClassLoadingListener.handleEvent(DelayedClassLoadingListener.java:62)
at org.eclipse.wst.common.project.facet.core.events.internal.ProjectListenerRegistry.notifyListeners(ProjectListenerRegistry.java:76)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.notifyListeners(FacetedProject.java:1327)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.modifyInternal(FacetedProject.java:454)
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:2344)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.modify(FacetedProject.java:339)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.installProjectFacet(FacetedProject.java:255)
at org.jboss.tools.maven.seam.configurators.SeamProjectConfigurator.installWarFacets(SeamProjectConfigurator.java:315)
at org.jboss.tools.maven.seam.configurators.SeamProjectConfigurator.configureInternal(SeamProjectConfigurator.java:173)
at org.jboss.tools.maven.seam.configurators.SeamProjectConfigurator.mavenProjectChanged(SeamProjectConfigurator.java:257)
at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.mavenProjectChanged(ProjectConfigurationManager.java:752)
at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.notifyProjectChangeListeners(ProjectRegistryManager.java:724)
at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.applyMutableProjectRegistry(ProjectRegistryManager.java:847)
at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refresh(ProjectRegistryManager.java:280)
at org.eclipse.m2e.core.internal.project.registry.MavenProjectManager.refresh(MavenProjectManager.java:58)
at org.eclipse.m2e.core.internal.builder.MavenBuilder.build(MavenBuilder.java:120)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:728)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374)
at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143)
at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

and

java.lang.IllegalArgumentException: Path for project must have only one segment.
at org.eclipse.core.runtime.Assert.isLegal(Assert.java:63)
at org.eclipse.core.internal.resources.WorkspaceRoot.getProject(WorkspaceRoot.java:184)
at org.jboss.tools.maven.seam.MavenSeamActivator.configureTestProject(MavenSeamActivator.java:172)
at org.jboss.tools.maven.seam.MavenSeamActivator.configureSeamProject(MavenSeamActivator.java:163)
at org.jboss.tools.maven.seam.internal.project.facet.MavenPostInstallListener.handleEvent(MavenPostInstallListener.java:58)
at org.eclipse.wst.common.project.facet.core.events.internal.DelayedClassLoadingListener.handleEvent(DelayedClassLoadingListener.java:62)
at org.eclipse.wst.common.project.facet.core.events.internal.ProjectListenerRegistry.notifyListeners(ProjectListenerRegistry.java:76)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.notifyListeners(FacetedProject.java:1327)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.modifyInternal(FacetedProject.java:454)
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:2344)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.modify(FacetedProject.java:339)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.installProjectFacet(FacetedProject.java:255)
at org.jboss.tools.maven.seam.configurators.SeamProjectConfigurator.installWarFacets(SeamProjectConfigurator.java:315)
at org.jboss.tools.maven.seam.configurators.SeamProjectConfigurator.configureInternal(SeamProjectConfigurator.java:173)
at org.jboss.tools.maven.seam.configurators.SeamProjectConfigurator.mavenProjectChanged(SeamProjectConfigurator.java:257)
at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.mavenProjectChanged(ProjectConfigurationManager.java:752)
at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.notifyProjectChangeListeners(ProjectRegistryManager.java:724)
at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.applyMutableProjectRegistry(ProjectRegistryManager.java:847)
at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refresh(ProjectRegistryManager.java:280)
at org.eclipse.m2e.core.internal.project.registry.MavenProjectManager.refresh(MavenProjectManager.java:58)
at org.eclipse.m2e.core.internal.builder.MavenBuilder.build(MavenBuilder.java:120)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:728)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374)
at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143)
at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)