Steps to reproduce:

• start the New Seam Web Project wizard
• select the JBoss Maven Integration facet
• uncheck the "Create Test Project" combo on the New Seam Project page
• click Finish
  You will get the following exception:

!ENTRY org.jboss.tools.maven.seam 4 0 2009-12-09 21:05:03.953
!MESSAGE test-test does not exist
!STACK 1
Java Model Exception: Java Model Status [test-test does not exist]
at org.eclipse.jdt.internal.core.JavaElement.newNotPresentException(JavaElement.java:492)
at org.eclipse.jdt.internal.core.JavaModelManager.getPerProjectInfoCheckExistence(JavaModelManager.java:2062)
at org.eclipse.jdt.internal.core.JavaProject.getPerProjectInfo(JavaProject.java:1820)
at org.eclipse.jdt.internal.core.JavaProject.getRawClasspath(JavaProject.java:1842)
at org.jboss.tools.maven.core.MavenCoreActivator.getSourceDirectory(MavenCoreActivator.java:253)
at org.jboss.tools.maven.seam.MavenSeamActivator.configureTestProject(MavenSeamActivator.java:259)
at org.jboss.tools.maven.seam.MavenSeamActivator.configureSeamProject(MavenSeamActivator.java:174)
at org.jboss.tools.maven.seam.internal.project.facet.MavenPostInstallListener.handleEvent(MavenPostInstallListener.java:62)
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:1317)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.modifyInternal(FacetedProject.java:451)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.mergeChangesInternal(FacetedProject.java:1171)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.access$2(FacetedProject.java:1107)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject$5.run(FacetedProject.java:1089)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1800)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.mergeChanges(FacetedProject.java:1099)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProjectWorkingCopy.commitChanges(FacetedProjectWorkingCopy.java:1958)
at org.eclipse.wst.common.project.facet.ui.ModifyFacetedProjectWizard.performFinish(ModifyFacetedProjectWizard.java:400)
at org.eclipse.wst.web.ui.internal.wizards.NewProjectDataModelFacetWizard.performFinish(NewProjectDataModelFacetWizard.java:279)
at org.jboss.tools.seam.ui.wizard.SeamProjectWizard.performFinish(SeamProjectWizard.java:298)
at org.eclipse.wst.common.project.facet.ui.ModifyFacetedProjectWizard$3.run(ModifyFacetedProjectWizard.java:331)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1800)
at org.eclipse.wst.common.project.facet.ui.ModifyFacetedProjectWizard$4.run(ModifyFacetedProjectWizard.java:345)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)
!SUBENTRY 1 org.eclipse.jdt.core 4 969 2009-12-09 21:05:03.984
!MESSAGE test-test does not exist

The issue has been introduced by fixing JBIDE-2807.