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(see previous log entries)
com.google.gwt.core.ext.UnableToCompleteException: (see previous log entries) at com.google.appengine.tools.development.gwt.AppEngineLauncher.start(AppEngineLauncher.java:91) at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:431) at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1053) at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:795) at com.google.gwt.dev.DevMode.main(DevMode.java:282)