The following error when no templates are in a project namespace:

org.eclipse.core.runtime.AssertionFailedException: null argument:
at org.eclipse.core.runtime.Assert.isNotNull(Assert.java:85)
at org.eclipse.core.runtime.Assert.isNotNull(Assert.java:73)
at org.eclipse.jface.viewers.StructuredViewer.assertElementsNotNull(StructuredViewer.java:583)
at org.eclipse.jface.viewers.StructuredViewer.getRawChildren(StructuredViewer.java:1001)
at org.eclipse.jface.viewers.ColumnViewer.getRawChildren(ColumnViewer.java:700)
at org.eclipse.jface.viewers.AbstractTreeViewer.getRawChildren(AbstractTreeViewer.java:1349)
at org.eclipse.jface.viewers.TreeViewer.getRawChildren(TreeViewer.java:353)
at org.eclipse.jface.viewers.StructuredViewer.getFilteredChildren(StructuredViewer.java:906)
at org.eclipse.jface.viewers.AbstractTreeViewer.getSortedChildren(AbstractTreeViewer.java:617)
at org.eclipse.jface.viewers.AbstractTreeViewer$1.run(AbstractTreeViewer.java:815)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:791)
at org.eclipse.jface.viewers.TreeViewer.createChildren(TreeViewer.java:611)
at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:762)
at org.eclipse.jface.viewers.AbstractTreeViewer.internalInitializeTree(AbstractTreeViewer.java:1541)
at org.eclipse.jface.viewers.TreeViewer.internalInitializeTree(TreeViewer.java:790)
at org.eclipse.jface.viewers.AbstractTreeViewer$5.run(AbstractTreeViewer.java:1525)
at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1462)
at org.eclipse.jface.viewers.TreeViewer.preservingSelection(TreeViewer.java:366)
at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1423)
at org.eclipse.jface.viewers.AbstractTreeViewer.inputChanged(AbstractTreeViewer.java:1517)
at org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:292)
at org.eclipse.jface.viewers.StructuredViewer.setInput(StructuredViewer.java:1701)
at org.jboss.tools.openshift.internal.ui.wizard.application.ResourcesDetailsPage.createTemplatesViewer(ResourcesDetailsPage.java:66)
at org.jboss.tools.openshift.internal.ui.wizard.application.ResourcesDetailsPage.doCreateControls(ResourcesDetailsPage.java:48)
at org.jboss.tools.openshift.internal.common.ui.wizard.AbstractOpenShiftWizardPage.createControl(AbstractOpenShiftWizardPage.java:70)
at org.eclipse.jface.wizard.Wizard.createPageControls(Wizard.java:175)
at org.eclipse.jface.wizard.WizardDialog.createPageControls(WizardDialog.java:705)
at org.eclipse.jface.wizard.WizardDialog.createContents(WizardDialog.java:597)
at org.eclipse.jface.window.Window.create(Window.java:430)
at org.eclipse.jface.dialogs.Dialog.create(Dialog.java:1096)
at org.jboss.tools.openshift.internal.common.ui.utils.WizardUtils.createWizardDialog(WizardUtils.java:53)
at org.jboss.tools.openshift.internal.common.ui.utils.WizardUtils.openWizard(WizardUtils.java:74)
at org.jboss.tools.openshift.internal.common.ui.utils.WizardUtils.openWizard(WizardUtils.java:67)
at org.jboss.tools.openshift.internal.ui.command.NewApplicationHandler.execute(NewApplicationHandler.java:36)
at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:295)
at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:90)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:55)
... 38 more