trying to create a seam project (as EAR) and I get a NullPointer.

This is not the first time we get that NPE; probably because of some missing file or whatnot - but we should then report that in a user dialog instead of NPE.

java.lang.NullPointerException
at org.jboss.tools.seam.internal.core.project.facet.AntCopyUtils.copyFilesAndFolders(AntCopyUtils.java:141)
at org.jboss.tools.seam.internal.core.project.facet.SeamFacetInstallDelegete.execute(SeamFacetInstallDelegete.java:265)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.callDelegate(FacetedProject.java:1201)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.modifyInternal(FacetedProject.java:394)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.access$2(FacetedProject.java:288)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject$1.run(FacetedProject.java:270)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1797)
at org.eclipse.wst.common.project.facet.core.internal.FacetedProject.modify(FacetedProject.java:280)
at org.eclipse.wst.common.project.facet.ui.ModifyFacetedProjectWizard.performFinish(ModifyFacetedProjectWizard.java:373)
at org.eclipse.wst.web.ui.internal.wizards.NewProjectDataModelFacetWizard.performFinish(NewProjectDataModelFacetWizard.java:292)
at org.eclipse.wst.common.project.facet.ui.ModifyFacetedProjectWizard$2.run(ModifyFacetedProjectWizard.java:261)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1797)
at org.eclipse.wst.common.project.facet.ui.ModifyFacetedProjectWizard$3.run(ModifyFacetedProjectWizard.java:275)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:113)