Unable to stage:
java.lang.RuntimeException: Failed to generate quickstart-web.xml.
	at com.google.appengine.tools.admin.Application.createQuickstartWebXml(Application.java:1831)
	at com.google.appengine.tools.admin.Application.populateStagingDirectory(Application.java:1002)
	at com.google.appengine.tools.admin.Application.createStagingDirectory(Application.java:871)
	at com.google.appengine.tools.admin.AppAdminImpl.stageApplication(AppAdminImpl.java:539)
	at com.google.appengine.tools.admin.AppAdminImpl.stageApplicationWithDefaultResourceLimits(AppAdminImpl.java:492)
	at com.google.appengine.tools.admin.AppCfg$StagingAction.execute(AppCfg.java:2508)
	at com.google.appengine.tools.admin.AppCfg.executeAction(AppCfg.java:363)
	at com.google.appengine.tools.admin.AppCfg.<init>(AppCfg.java:211)
	at com.google.appengine.tools.admin.AppCfg.<init>(AppCfg.java:118)
	at com.google.appengine.tools.admin.AppCfg.main(AppCfg.java:114)
com.google.appengine.tools.admin.AdminException: Unable to stage app: Failed to generate quickstart-web.xml.
	at com.google.appengine.tools.admin.AppAdminImpl.stageApplication(AppAdminImpl.java:543)
	at com.google.appengine.tools.admin.AppAdminImpl.stageApplicationWithDefaultResourceLimits(AppAdminImpl.java:492)
	at com.google.appengine.tools.admin.AppCfg$StagingAction.execute(AppCfg.java:2508)
	at com.google.appengine.tools.admin.AppCfg.executeAction(AppCfg.java:363)
	at com.google.appengine.tools.admin.AppCfg.<init>(AppCfg.java:211)
	at com.google.appengine.tools.admin.AppCfg.<init>(AppCfg.java:118)
	at com.google.appengine.tools.admin.AppCfg.main(AppCfg.java:114)
Caused by: java.lang.RuntimeException: Failed to generate quickstart-web.xml.
	at com.google.appengine.tools.admin.Application.createQuickstartWebXml(Application.java:1831)
	at com.google.appengine.tools.admin.Application.populateStagingDirectory(Application.java:1002)
	at com.google.appengine.tools.admin.Application.createStagingDirectory(Application.java:871)
	at com.google.appengine.tools.admin.AppAdminImpl.stageApplication(AppAdminImpl.java:539)
	... 6 more